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Questions tagged [exponent]

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8 votes
5 answers

Element-wise vector-matrix exponentiation

I would like to exponentiate the vector x = {x1,x2} element-wise with the non-square matrix A = {{1,0},{1,1},{0,1}} so that the ...
hr8tpa's user avatar
  • 83
0 votes
0 answers

How does Mathematica select principal roots of complex numbers?

When I do I^(1/3) I get Out[]:= (-1)^(1/6) which is one of the solutions of $z^3=i$. There are two more solutions which are ...
sam wolfe's user avatar
  • 4,903
-1 votes
1 answer

Equation for integer exponents

I'm trying to solve some equations regarding power expansions, but Mathematica doesn't seem to find any solutions (it runs for an arbitrary long time). For example, I have the equation: ...
Marcosko's user avatar
  • 259
1 vote
1 answer

How to obtain a list of pairs of exponents in a double series expansion?

Let's say we have a function of two variables $f(x,y)$ and we work out its Taylor expansion up to some power. I would like to use Mathematica to construct a list of all exponents that appear in the ...
user1620696's user avatar
3 votes
2 answers

Convert number of scientific format with with negative exponent to MaTeX?

MaTeX can convert many data to LaTeX format, such as: MaTeX[1.26591*^100] will output But when the number has a minus of the exponent, MaTeX wouldn't work right. ...
Y. zeng's user avatar
  • 567
0 votes
1 answer

Is it possible to ask Mathematica to order this expression in terms of descending absolute values of the arguments of the exponential functions?

I have the given expression which is a sum of exponential functions with some parameters $a,t,u,y$ where $a>0$. Question Is it possible to ask Mathematica to order this expression in terms of ...
Martha97's user avatar
  • 349
0 votes
0 answers

Nested NIntegrate with Matrix Exponential

I wish to perform a numerical integration which involves a matrix exponential. Here's the following code ...
kowalski's user avatar
  • 375
0 votes
1 answer

The `Exponent` of some expressions with `Sum`

Why the following code does not give T where T is a positive integer? Exponent[Sum[Subscript[A, i]*f[x]^i, {i, 0, T}], f[x]] or ...
HD239's user avatar
  • 543