User Portlet
| Discussions |
|---|
| Could you come up with one specific value for r and two specific values for n where the result should be different for those two values of n and why those two results should be different instead of the same? With that I can try to pound on this and... |
| You can make your definition of f[t] slightly simpler f[t_]=Piecewise[{{2 Sqrt[1-t^2]/Pi,-1 =1. Can you think for a few minutes to see whether this information might let you integrate over a far smaller range than -infinity to infinity and... |
| Perhaps think: 2 equations, 2 unknowns. Try Solve[ { y*x == 15, x==5},{x, y}] |
| Sometimes, if you experiment a little bit with inputs to Wolfram Alpha, you can find a syntax that Wolfram Alpha will show you an "Input interpretation" below your input that matches what you want. Example: I found a/b c where a=6, b=2,... |
| Problems that include Abs or Conjugate often seem more difficult to solve. If you could find a way to express the problem in a form similar to FunctionRange[{(x1 + y1 - 1)/Sqrt[2] +(x2 + y2 - 1)/Sqrt[2], x1^2 + y1^2 == 1, x2^2 +... |
| After a little poking around in WolframAlpha I find I can enter convert 2.1/(89.5+2.1+1.9+1.6+8.3+1987.0+259.7+7855.4) to percent and it displays 0.02058% |
| Select[Tuples[{1,2,3,4,5,6,7,8,9},6], Mod[FromDigits[#],7]==0&& Mod[FromDigits[RotateLeft[#,1]],9]==0&& Mod[FromDigits[RotateLeft[#,2]],11]==0&& Mod[FromDigits[RotateLeft[#,3]],13]==0&& ... |
| 23 minutes ago I posted showing how you could probably get some correct leading digits. Changing the subject. If you type something in and it doesn't work then posting that you typed something in and it didn't work does not give anyone the... |
| Solve sin(y)+2*y=0 for y yields y=0 Solve -sin(x)*cos(x)*cos(y)+2*x=0,y=0 for x yields x=0 |
| I thought I saw what the problem was. Now I see that I was mistaken. I'm sorry. |