Using user input to solve for a variable in a function

So I have an unknown x (my variable) and a, k, t1 and t2 are values that are obtained from the user. I used the input function to obtain a value for a, k, t1, and t2.

example: p1 = 'What is value for a? '; a = input(p1);

Then I want to take those input values and put them into this equation: f = @(x)(x-a)/(k*(t1-t2))

then finally solve for x based on the inputs.

Is it possible to do something like this?

Answer 1

[Jason Millen]

I think what you might be looking for is the solve() function. It allows you to pass in an equation and a variable that you would like to solve for and will solve the equation for the variable. For example, you can do:

syms x
eqn = sin(x) == 1;
solx = solve(eqn,x)

solx =

pi/2

You can find the full documentation for solve() here.

If you are just asking if what you are doing is possible, it believe it is. The following worked for me:

a = input('enter value for a')

enter value for a 0

a =

0

b = input('enter value for k')

enter value for k 3

k =

3

t1 = input('enter value for t1')

enter value for t1 2

t1 =

2

t2 = input('enter value for t2')

enter value for t2 1

t2 =

1

f = @(x)(x - a)/(k*(t1 - t2))

f =

function_handle with value:

@(x)(x-a)/(k*(t1-t2))

f(9)

ans =

3