Question: I need help with these. By multiplying? Evaluate each expression without using a calculator, or state that the value does not exist. Simplify answers to

I need help with these. By multiplying?

Evaluate each expression without using a calculator, or state that the value does not exist. Simplify answers to the extent possible. a. sech 0 b. tanh ( sinh 0) c. tanh ( In 6) d. sinh (3 In 3) e. cosh

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