In the statement f = @ (x, y) exp (- X. ^ 2 / 3) * sin (X. ^ 2 + 2 * y) in MATLAB @ (x,

In the statement f = @ (x, y) exp (- X. ^ 2 / 3) * sin (X. ^ 2 + 2 * y) in MATLAB @ (x,

This is a function handle @ (x, y) denotes that the unknown number is x and ypunct - function handle creation @ @ denotes the function handle in anonymous functions, such as ln (x), which is not defined in MATLAB, and the correct representation is log (x); but if you want to intuitively represent the natural logarithm, the meaning is to

I only know about coskx
RT

Cosh (a) = [e ^ A + e ^ (- a)] / 2 hyperbolic cosine
It's a hyperbolic function
It's a formula in high mathematics
Sinh (a) = [e ^ A-E ^ (- a)] / 2 hyperbolic sine
TGH (a) = sin H (a) / cos H (a) hyperbolic tangent

What formula is cosh (a)

cosh(a) = [e^a + e^(-a)]/2