Question to Matlab solve-function

Hey guys I have a simple question: I am using Matlab R2010a and trying to solve an equation with 1 variable like this:

solve('4-t^2=0')

ans =

   -2
    2

No problem as you can see ;) My question is, when I try to replace the 4 with a variable (lets call it A), it wont work how I want it to work:

solve('A-t^2=0')

ans =

    A^(1/2)
   -A^(1/2)

All fine, solution found but A is not a variable, it has a defined value of 4, so that the solution would be -2,2. Can anyone help me to find the solution to this problem if its possible?

Thanks a lot guys!

[Inzamamul Haq]

hi try to solve my book question please helpq

[Faithful Friend]

Can you help me to solve these questions ??❤

1) Write the program that prints on the screen that the given system is not hyperstatic, isostatic or geometrically changing olopes.

2) Write the program that finds the support reactions of an L-length beam (isostatic) according to the external force to be entered.

3) L uzunluğundaki bir kirişin herhangi bir noktasındaki moment ve kesme kuvvetini bulan programı yazınız.

Answer 1

[Azzi Abdelmalek]

syms a t;
sol=solve(a-t^2)

[David]

thanks alot everything works!

Answer 2

[randa khaireddin]

Question 4: Consider the matrix A.

? = [

3 5 −4 −8 −1 33 −17 6 −9 ] Using for loop with conditional statements, write a program that generates matrix B by:  computing the natural logarithm of the elements of A whose value is greater than 1,  adding 5 to each element of A that is equal to or less than 1.

A. Write down the MATLAB code for this program. B. [2 pts] Write down the generated matrix B.

Answer 3

[ATUL KUMAR]

𝑥1 (𝑛) = 10𝑢(𝑛) − 5𝑢(𝑛 − 5) − 10𝑢(𝑛 − 10) + 5𝑢(𝑛 − 15).

Answer 4

[Faheem anwar]

Compute y(0.2) by Euler Method, h = 0 and h = 0.1

[Faheem anwar]

in matlab

Answer 5

[Vikas Vishwakarma]

The Graph of the I-V characteristics of an ideal diode solar cell when non-illuminated (dark) and illuminated. Solar cell output parameters From Figure-4, it is shown that there are 4 output parameters, which have to be considered in solar cell. The first parameter is I SC that is short circuit current output of solar cell, which is measured when the output terminal is shorted or V is equal to 0. The value of output

[Vikas Vishwakarma]

The Graph of the I-V characteristics of an ideal diode solar cell when non-illuminated (dark) and illuminated. Solar cell output parameters From Figure-4, it is shown that there are 4 output parameters, which have to be considered in solar cell. The first parameter is I SC that is short circuit current output of solar cell, which is measured when the output terminal is shorted or V is equal to 0. The value of output

Answer 6

[Sania]

High-voltage batteries in battery electric vehicles face significant load fluctuations due to driving behavior. This dynamic performance of the powertrain is contrasted by the almost constant load of the auxiliary consumers. The highest auxiliary consumption is generated by the heating and air conditioning system, which decreases the vehicles range significantly. 72 real driving trips with a BMW i3 (60 Ah) were recorded, serving for model validation of a full vehicle model consisting of the powertrain and the heating circuit.

Each trip contains:

Environmental data (temperature, elevation, etc.)

Vehicle data (speed, throttle, etc.)

Battery data (voltage, current, temperature, SoC)

Heating circuit data (indoor temperature, heating power, etc.)

The measurement data is in CSV format to ensure easy use by various standard programs (Excel, Matlab) or own developed codes (Python).

The script "readin.m" reads the csv files into MatLab as table and struct.

The data contains vehicle data, battery data and heating data.

The measurement data is divided into two categories. Category A was recorded in summer and does not contain all measured data due to trouble with the measurement system. Category B was recorded in winter and is consistent.

TripA01 2019-06-25_13-21-14 Munich East sunny 21.0 22.0 86.3% 80.3% 6.0% 25.5 23.0 7.43 16.82 Automatic, Level 1

TripA02 2019-06-25_14-05-31 Munich East sunny 23.0 26.0 80.3% 67.3% 13.0% 32.0 23.0 23.51 23.55 Automatic, Level 1 Target Cabin Temperature changed

TripA03 2019-06-28_10-02-15 Munich East sunny 24.0 25.0 83.5% 75.1% 8.4% 21.5 27.0 12.82 11.18 Automatic, Level 1 Target Cabin Temperature changed

TripA04 2019-06-28_10-13-30 Munich East sunny 25.0 27.0 75.1% 66.7% 8.4% 24.0 22.0 10.73 6.87 Automatic, Level 1

TripA05 2019-06-28_10-20-26 Munich East sunny 27.0 27.0 66.7% 60.2% 6.5% 24.5 24.0 12.39 22.78 Automatic, Level 1

TripA06 2019-07-01_09-05-25 Munich North sunny 25.0 28.0 85.1% 63.4% 21.7% 26.5 26.0 45.99 52.74 Automatic, Level 1 Target Cabin Temperature changed

TripA07 2019-07-01_12-59-48 Munich North sunny 30.0 30.0 63.4% 34.2% 29.2% 33.5 25.0 44.34 34.89 Automatic, Level 1

TripA08 2019-07-02_17-36-31 Munich East slightly cloudy 26.0 27.0 86.6% 76.1% 10.5% 27.0 25.0 18.23 46.76 Automatic, Level 1

TripA09 2019-07-03_08-05-00 Munich East slightly cloudy 22.0 22.0 74.7% 68.6% 6.1% 17.5 21.0 11.66 30.57 Automatic, Level 1

TripA10 2019-07-03_12-16-12 Munich East slightly cloudy 22.0 23.0 69.6% 60.9% 8.7% 22.5 25.0 16.25 23.63 Automatic, Level 1

TripA11 2019-07-04_15-09-22 Munich East sunny 26.0 27.0 87.0% 75.6% 11.4% 30.0 30.0 17.73 23.74 Automatic, Level 1

TripA12 2019-07-04_15-51-48 Munich East sunny 28.0 30.0 75.5% 64.3% 11.2% 26.5 25.0 18.65 27.31 Automatic, Level 1

TripA13 2019-07-05_09-02-55 Munich East sunny 22.0 22.0 85.5% 82.9% 2.6% 21.0 23.0 4.57 11.93 Automatic, Level 1

TripA14 2019-07-05_09-18-22 Munich East sunny 22.0 22.0 82.8% 79.9% 2.9% 24.5 22.0 4.93 11.58 Automatic, Level 1

TripA15 2019-07-08_12-19-56 Munich East rainy 17.0 19.0 74.8% 63.4% 11.4% 19.0 23.0 26.97 37.23 Automatic, Level 1

TripA16 2019-07-08_13-17-32 Munich East rainy 19.0 19.0 63.0% 51.5% 11.5% 19.5 23.0 28.80 31.78 Automatic, Level 1

TripA17 2019-07-09_09-37-58 Munich East slightly cloudy 16.0 18.0 86.8% 77.9% 8.9% 15.5 25.0 12.97 11.14 Automatic, Level 1

TripA18 2019-07-09_09-49-09 Munich East slightly cloudy 18.0 19.0 77.9% 70.2% 7.7% 16.0 22.0 12.19 14.68 Automatic, Level 1 Target Cabin Temperature changed

TripA19 2019-07-09_17-48-14 Munich East slightly cloudy 22.0 22.0 88.5% 80.4% 8.1% 23.5 30.0 16.73 26.46 Automatic, Level 1

TripA20 2019-07-10_08-07-22 Munich East slightly cloudy 17.0 17.0 77.0% 69.1% 7.9% 14.0 26.0 11.52 28.66 Automatic, Level 1

TripA21 2019-07-10_16-40-57 Munich East sunny 18.0 20.0 71.3% 63.7% 7.6% 22.5 22.0 14.32 33.05 Automatic, Level 1

TripA22 2019-07-11_07-48-28 Munich East sunny 19.0 20.0 87.3% 76.5% 10.8% 17.0 23.0 19.37 30.65 Automatic, Level 1

TripA23 2019-07-12_10-41-36 Munich East sunny 16.0 17.0 87.4% 81.9% 5.5% 19.5 28.0 8.36 17.38 Automatic, Level 1

TripA24 2019-07-12_11-08-00 Munich East sunny 17.0 19.0 81.9% 74.4% 7.5% 19.0 23.0 11.27 8.87 Automatic, Level 1

TripA25 2019-07-12_10-59-05 Munich East sunny 19.0 20.0 74.4% 65.2% 9.2% 17.0 33.0 12.21 12.71 Automatic, Level 1

TripA26 2019-07-15_13-08-25 Munich East slightly cloudy 19.0 20.0 86.2% 78.8% 7.4% 22.0 30.0 18.03 26.87 Automatic, Level 1

TripA27 2019-07-15_13-45-10 Munich East slightly cloudy 20.0 22.0 78.5% 66.8% 11.7% 25.5 25.0 20.43 33.34 Automatic, Level 1

TripA28 2019-07-16_10-31-30 Munich East sunny 18.0 19.0 81.9% 72.0% 9.9% 20.5 25.0 19.52 29.06 Automatic, Level 1

TripA29 2019-07-16_11-10-00 Munich East sunny 19.0 21.0 70.9% 63.1% 7.8% 24.0 29.0 16.33 22.32 Automatic, Level 1

TripA30 2019-07-19_09-34-23 Munich East sunny 20.0 20.0 85.5% 81.0% 4.5% 19.0 25.0 7.75 23.29 Automatic, Level 1

TripA31 2019-07-19_09-34-23 Munich East sunny 20.0 21.0 81.0% 82.5% 71.9% 23.5 26.0 15.98 19.78 Automatic, Level 1

TripA32 2019-07-22_12-56-55 Munich East slightly cloudy 21.0 26.0 86.5% 59.5% 27.0% 20.0 27.5 37.21 27.87 Automatic, Level 1

TripB01 2019-12-07_12-35-00 FTMRoute (2x) cloudy 7.0 15.0 86.1% 57.4% 28.7% 8.5 22.0 38.79 54.20 Automatic, Level 1

TripB02 2019-12-07_17-49-35 FTMRoute dark, little rainy 13.0 15.0 81.0% 66.2% 14.8% 6.5 22.0 18.93 26.85 Automatic, Level 1

TripB03 2019_12_08_09-38-26 FTMRoute sunny 9.0 12.0 67.4% 50.4% 17.0% 3.5 22.0 19.40 26.32 Automatic, Level 1 Sunday -> little traffic

TripB04 2019_12_08_13-47-18 Munich North + Fast Charging cloudy 12.0 20.0 45.1% 69.2% -24.1% 9.0 22.0 16.60 49.25 Automatic, Level 1 Sunday -> little traffic

TripB05 2019_12_09_07-58-11 Munich North cloudy 10.0 11.0 71.9% 59.5% 12.4% 7.0 22.0 14.82 16.99 Automatic, Level 1 Rush Hour

TripB06 2019_12_09_18-16-14 Munich North dark 11.0 13.0 83.2% 69.3% 13.9% 6.0 22.0 16.58 22.53 Automatic, Level 1 Rush Hour

TripB07 2019-12-10_09-35-46 Munich Northeast slightly cloudy 5.0 8.0 67.4% 50.4% 17.0% 2.5 22.0 30.38 38.16 Automatic, Level 1

TripB08 2019-12-17_07-21-04 Munich Northeast cloudy 7.0 10.0 67.3% 44.0% 23.3% 3.5 22.0 32.22 48.57 Automatic, Level 1

TripB09 2020-01-02_13-45-21 Munich South sunny 0.0 14.0 70.0% 46.0% 24.0% 5.5 22.0 54.18 93.50 Automatic, Level 1 Fast Charging, '+70 kg

TripB10 2020-01-03_10-50-36 Highway slightly cloudy 2.0 14.0 84.8% 39.0% 45.8% 2.5 22.0 47.84 33.72 Automatic, Level 1 +70 kg

TripB11 2020-01-03_11-36-24 Munich South cloudy 14.0 15.0 38.9% 30.8% 8.1% 4.0 22.0 10.21 12.56 Automatic, Level 1

TripB12 2020-01-03_12-16-10 Highway cloudy 22.0 20.0 73.4% 51.3% 22.1% 7.5 22.0 37.06 53.76 Automatic, Level 1

TripB13 2020-01-03_13-23-24 Munich South cloudy 20.0 20.0 57.0% 55.1% 1.9% 6.0 22.0 2.78 5.91 Automatic, Level 1

TripB14 2020-01-05_11-08-25 Highway cloudy 3.0 13.0 85.5% 34.6% 50.9% 3.0 22.0 60.97 63.70 Automatic, Level 1 +70kg

TripB15 2020-01-07_10-02-47 FTMRoute slightly cloudy 9.0 11.0 85.1% 67.5% 17.6% 2.0 22.0 19.24 30.37 Automatic, Level 1 FTMRoute

TripB16 2020-01-07_10-33-19 FTMRoute slightly cloudy 11.0 13.0 67.5% 52.8% 14.7% 3.0 22.0 19.23 25.48 Automatic, Level 1 FTMRoute (directly after previous trip)

TripB17 2020-01-07_10-58-55 FTMRoute slightly cloudy 13.0 15.0 52.8% 37.2% 15.6% 3.5 22.0 19.25 26.02 Automatic, Level 1 FTM Route (directly after previous trip)

TripB18 2020-01-08_17-43-26 Munich North cloudy 3.0 6.0 82.8% 68.1% 14.7% 2.5 22.0 15.81 18.49 Automatic, Level 1

TripB19 2020-01-09_08-29-07 Munich North sunrise 6.0 8.0 85.8% 71.6% 14.2% 3.0 22.0 16.43 19.85 Automatic, Level 1

TripB20 2020-01-09_17-21-44 Munich North dark 10.0 12.0 72.7% 62.0% 10.7% 5.0 22.0 12.34 23.38 Automatic, Level 1 Rush Hour

TripB21 2020-01-10_08-07-33 Munich North sunrise 7.0 9.0 55.7% 41.1% 14.6% 1.5 22.0 15.84 17.33 Automatic, Level 1

TripB22 2020-01-10_16-42-46 Munich North sunset 11.0 13.0 84.4% 70.5% 13.9% 7.5 22.0 16.86 19.99 Automatic, Level 1 +80 kg

TripB23 2020-01-11_12-52-38 Munich North slightly cloudy 6.0 10.0 72.1% 53.5% 18.6% 5.0 22.0 18.71 18.55 Automatic, Level 1 +60 kg

TripB24 2020-01-11_14-29-56 Munich North slightly cloudy 10.0 11.0 53.4% 45.5% 7.9% 6.5 22.0 9.33 16.30 Automatic, Level 1 +60 kg

TripB25 2020-01-11_14-55-27 Munich North slightly cloudy 10.0 12.0 45.4% 33.6% 11.8% 5.5 22.0 13.50 17.03 Automatic, Level 1 +70 kg

TripB26 2020-01-11_15-24-57 Munich North slightly cloudy 12.0 15.0 33.4% 21.2% 12.2% 5.5 22.0 14.70 13.42 Automatic, Level 1

TripB27 2020-01-12_11-12-56 FTMRoute sunny 1.0 5.0 52.9% 34.5% 18.4% 1.0 22.0 19.23 24.48 Automatic, Level 1 Sunday -> little traffic

TripB28 2020-01-12_11-37-29 FTMRoute sunny 5.0 10.0 34.4% 20.0% 14.4% 3.5 22.0 17.53 22.77 Automatic, Level 1 Sunday -> little traffic, (directly after previous trip)

TripB29 2020-01-12_12-33-29 Munich North cloudy 11.0 14.0 31.5% 15.4% 16.1% 3.5 22.0 15.83 16.14 Automatic, Level 1 Sunday -> little traffic

TripB30 2020-01-13_07-53-37 Munich North sunrise 4.0 6.0 84.2% 70.4% 13.8% 0.0 22.0 14.86 15.35 Automatic, Level 1 (screen defrost for the first 2 min)

TripB31 2020-01-13_17-31-04 Munich North dark 6.0 8.0 72.1% 57.8% 14.3% 3.5 22.0 15.24 18.28 Automatic, Level 1

TripB32 2020-01-14_09-47-42 Munich North cloudy 4.0 7.0 52.6% 38.1% 14.5% 2.0 22.0 14.24 13.26 Automatic, Level 1

TripB33 2020-01-14_11-44-28 Munich North cloudy 11.0 12.0 77.4% 71.6% 5.8% 4.0 22.0 7.03 9.13 Automatic, Level 1 + 160 kg

TripB34 2020-01-14_12-55-08 Munich North cloudy 11.0 11.0 73.9% 71.3% 2.6% 5.5 22.0 9.14 12.23 Automatic, Level 1 + 160 kg

TripB35 2020-01-14_17-59-06 Munich North dark 11.0 13.0 85.4% 71.5% 13.9% 4.0 22.0 15.42 22.71 Automatic, Level 1

TripB36 2020-01-15_10-43-44 Munich North sunny 6.0 10.0 72.1% 44.5% 27.6% 4.0 22.0 38.72 47.54 Automatic, Level 1 Open door at 37:10 and 42:00 for 30s

TripB37 2020-01-21_09-15-20 Munich East slightly cloudy 8.0 10.0 83.8% 68.0% 15.8% -3.0 22.0 17.46 23.62 Automatic, Level 1

TripB38 2020-02-07_09-32-02 FTMRoute reverse sunny -1.0 3.0 65.0% 48.8% 16.2% -1.5 22.0 18.90 27.38 Automatic, Level 1 Rush Hour

use this data solution with MATLAB coding