Solve the following, giving your answers in terms of ln a: 7 sechx - tanhx =5

7sechx - tanhx = 5 7/coshx - sinhx/coshx = 5 7 - sinhx = 5 cosh x 7 - 0.5(e^x - e^-x) = 2.5(e^x + e^-x) 7 -0.5e^x + 0.5e^-x = 2.5e^x + 2.5e^-x 0 = 3e^x - 7 + 2e^-x 0 = 3e^2x - 7e^x + 2 0 = (3e^x - 1)(e^x -2) e^x = 1/3   e^x =2 x= ln 1/3 x=ln 2