# Questions tagged [broken-code]

Use this tag only if you did your research and you still don't know why your syntactically correct code does not work.

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### Weighted mean of complex exponential function using NIntegrate

I have defined the following functions: ...
• 259
2k views

### Where did I go wrong with my implementation of finding a plane tangent to a surface?

I am working on finding the plane tangent to a paraboloid at a given point. My code: ...
• 595
1 vote
432 views

### What's wrong when I use NestWhileList?

Problem : A Happy number is a number that if one squares its digits and add them together, and then take the result and square its digits and add them together again and keep doing this process, ...
• 595
376 views

### Optimization of power tower fractal generator [closed]

I tried to optimize the code for generating power tower fractals from here. As the author suggested, I tried to memorize the points already tested in a list. Here is my code : ...
• 55
1 vote
252 views

### What's wrong with my code for finding primes?

From here I found a fast method to make prime list, the python version works well, but my Mathematica version does not. Obviously ,169 is not a prime number. What's ...
• 5,562
178 views

### Reuse a dynamic list [duplicate]

Consider this Dynamic list ...
• 8,557
744 views

### EdgeRenderingFunction question

Bug introduced in 9.0 and fixed in 10.0.0 (Edit 1 : I added this paragraph after the original post, for context) Some context for this question can be found in another post (https://mathematica....
• 475
147 views

### How do I use a while-loop to find the gain of a transfer function's limit?

At the moment I can find the limit of my transfer function as follows: (5 4001.6)/(5 4001.6 + (4 + s) (200 + s)) /. s -> 0 This works as I would expect and ...