x is a real number and sinh^2(x) = 24/25

a) what are the possible values of sinh(x)?

b) what are the possible values of cosh(x)?

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- February 5th 2009, 04:24 PMmr_motivator[SOLVED] Hyperbolic Function
x is a real number and sinh^2(x) = 24/25

a) what are the possible values of sinh(x)?

b) what are the possible values of cosh(x)? - February 5th 2009, 04:56 PMmr fantastic
- February 5th 2009, 05:00 PMSoroban
Hello, mr_motivator!

Quote:

is a real number and

a) What are the possible values of ?

**really**don't know how to do this?

We have: .

. . Then: .

Quote:

b) What are the possible values of ?

We're expected to know the identity: .

So we have: .

Therefore: . . . (*cosh*is always positive.)

.