Linked Questions

1
vote
1answer
150 views

How to simplify logs but keep the same base [duplicate]

Consider the function: $f(x)=\log_3x+\log_316-\log_34$. This can be simplified to $\log_34x$. To simplify this function in Mathematica, I would use the command ...
21
votes
3answers
3k views

Mathematica Sec and Csc

How can I prevent Mathematica from using the "old fashioned" functions "Sec" and "Csc"? In Germany these functions are "old fashioned" as they are not taught anymore at school.
6
votes
3answers
2k views

Replacing Tan[x] with Sin[x]/Cos[x]

Why doesn't this work? (1 - Tan[x])/(Sin[x] - Cos[x]) /. Tan[x] -> Sin[x]/Cos[x] I get back: ...
14
votes
1answer
3k views

Simplify Sin[x]/x to Sinc[x]

I have an expression in the form of $\tt \frac{Sin[x]}{x}$ that I would like to simplify to the form of Sinc[x]. I've tried the ...
5
votes
3answers
4k views

How to simplify 1 - Cos[2x] to 2 Sin[x]^2?

I want to reduce all Cos[2 x] to 1 - 2Sin[x]^2, it seems Mathematica will always simplify ...
7
votes
4answers
782 views

How to rename a built-in function?

I want a built-in function renamed without loss of any properties, I want the shorter name to appear in all results and to be recognized as input. Is it possible?
9
votes
1answer
206 views

How to ask Mathematica to display all the logarithms (in output) in base 2?

How to ask Mathematica to display all the logarithms (in output) in base 2? Instead it always displays in base $e$. Very often, I need to do a lot of things with mixed expressions having some $\...
3
votes
4answers
319 views

How do I prevent exponents from being expanded when displaying text

I have a power of 2 in a list, and I want it to show as $2^{31}$ (2 with exponent 31), not 2147483648. I've tried this: ...
4
votes
2answers
226 views

Prevent manipulations in PlotLegends

Mathematica code to reproduce: ...
-1
votes
3answers
239 views

How do I convert the E^[…] notation back to Exp[…] notation?

How do I convert the E^[...] notation back to Exp[...] notation? Is there a simple command for this? It appears that ...
2
votes
1answer
138 views

Trouble with using a log10 function in NonlinearModelFit

I was wondering why won't mathematica give a result where the function is also Log10, instead it gives the ordinary Log. Is it ...
2
votes
1answer
207 views

How can I get Mathematica to simplify my expression?

4.`*^-12 Sqrt[3.0254210421890627`*^22 - 6.25`*^22 T6^2] The above expression is equal to Sqrt[0.48406736675024997` - T6^2] ...