Question

$\int_{}^{}\frac{\mathbf{e}^{\mathbf{x}}\mathbf{dx}}{\mathbf{\cos}\mathbf{h}\mathbf{x +}\mathbf{\sin}\mathbf{h}\mathbf{x}}$is

• A. $\frac{1}{2}$e^2x + c
• B. x + c
• C. log (cot hx) + c
• D. log (tan hx) + c

Answer 1

Answer: (B)

x + c

Answer 2

sin hx = (e^x – e^–x)/ 2, cos hx = (e^x + e^–x)/2