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Prouhet–Tarry–Escott (basic)
Inspired by <http://www.mathworks.com/matlabcentral/cody/problems/660-find-a-subset-that-divides-the-vector-into-equal-halves pr...

約5年前

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what do we have here(very briefLy) ???

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rotate your name 90 degree

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Reverse your name ?

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Deduce the pattern behind the sequence

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give me the reverse of your name!!!

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Sum of series IX

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Sum of series VIII

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Primes Faster for Large N
This Challenge is to improve the "primes" function for speed. This may be accomplished by fixing memory usage. The Matlab fun...

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Find my secret function II
If give my function a x value it will give me a y value, so find the secret of it: Examples: input x=23 ---- >>> output y=1...

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Convert Vp to Vrms

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Convert Voltage to dB

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Find power in dB

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Round up to π

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Identify prime words

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Area of triangle

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Solve an ODE: separable equation

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Derive the area of the circle with the radius of R?(please pay attention in every line of this)

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Find pairs of primes with the same digit sum

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Determine if the sum of y is greater than the sum of x.
Given the vector x and the vector y, determine which sum is greater.

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Primes for Large N: 2^30, System Memory Limit
This Challenge is to further improve the "primes" function for speed/memory usage to the Limit of Cody Memory. The Matlab fun...

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Input x, output y

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Number Puzzle - 101

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Find the remainder with the factorial of PRIMES?
* Take a number greater than or equal to 2 and take its primes. e.g. 6 and its primes are 2 3 5 * calculate the factorial of i...

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Compute the nth term from the golden sieve

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Animate creation of a circle clockwise and anticlokwise for different staringpoints
Tim, A correction to the last message. If you want to go counterclockwise, you need to make the final angle bigger than the st...

約5年前 | 0

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Animate creation of a circle clockwise and anticlokwise for different staringpoints
Hi Tim, Actually I have been thinking a little more about this, and I believe it is even easier than I suggested. You don't ne...

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Animate creation of a circle clockwise and anticlokwise for different staringpoints
Hi Tim, I don't think there is any problem with the cases you describe. The values of sin() and cos() are periodic in their ar...

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Draw a '0' in a one matrix!

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Draw a '4' in a zero matrix!

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