Verify the hyperbolic identites

[CalcStudent]

Homework Statement

verify these identities:

1) tanh^2 x + sech^2 x =1
2) sinh(x+y) = sinh cosh y + cosh x sinh y

Homework Equations

cosh2x - sinh2x = 1
sech2x + tanh2x = 1
coth2x - csch2x = 1

sinh (x ± y) = sinh x cosh y ± cosh x sinh y
cosh (x ± y) = cosh x cosh y ± sinh x sinh y
tanh(x ± y) = (tanh x ± tanh y)/(1 ± tanh x.tanh y)
coth(x ± y) = (coth x coth y ± l)/(coth y ± coth x)

 

[lineintegral1]

Um, the identities are given to you in your "relevant equations." What is it you are asking?

 

[flyingpig]

Pretty sure you are suppose to show us what you did first..