Hello,
I tried this post solve cos(x)*cos(y)+2*x=0,-sin(x)*sin(y)+2*y=0 for x y in Wolfram Alpha in different variations (brackets used / not used, hand over arguments / variables or not) but all of them resulted in this:Here's another run with the same functions.
solve cos(x)*cos(y)+2*x=0,-sin(x)*sin(y)+2*y=0 for x y
What's the reason for that? How can I solve it?
This is not a Matlab site, but the Matlab package Chebfun can probably solve your system.
With a free account, can you access
I don't know about Wolfram Alpha, but Mathematica gives nontrivial complex solutions too, provided we give bounds on the variables:
solY = Solve[Sin[y] + 2 y == 0 && Abs[y] < 6][[2]] Solve[Abs[x] < 2 && -Sin[x]*Cos[x]*Cos[y] + 2*x == 0 /. solY, x]
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
