Tommorow i have exam mathematic and i need to prove that:

a) cosh(x+y)=cosh(x)cosh(y)+sinh(x)sinh(y)

b) sinh2(x)= 1/2 (cosh(2x)-1)

* in b) sinh 2 is square. 1/2 one half.

I need to solve this problem tonight.

Printable View

- Oct 29th 2009, 11:13 AMmarkomkHow to prove that:
Tommorow i have exam mathematic and i need to prove that:

a) cosh(x+y)=cosh(x)cosh(y)+sinh(x)sinh(y)

b) sinh2(x)= 1/2 (cosh(2x)-1)

* in b) sinh 2 is square. 1/2 one half.

I need to solve this problem tonight.