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- e-x) = 2.5(e+ e-x) 7 -0.5e+ 0.5e-x = 2.5e+ 2.5e-x 0 = 3e- 7 + 2e-x 0 = 3e2x - 7ex + 2 0 = (3ex - 1)(ex -2) ex = 1/3   ex =2 x= ln 1/3 x=ln 2

AW
Answered by Alex W. Further Mathematics tutor

6837 Views

See similar Further Mathematics A Level tutors

Related Further Mathematics A Level answers

All answers ▸

A=[5k,3k-1;-3,k+1] where k is a real constant. Given that A is singular, find all the possible values of k.


Simplify (2x^3+8x^2+17x+18)/(x+2)


Why does matrix multiplication seem so unintuitive and weird?!


Given that y = arcsinh(x), show that y=ln(x+ sqrt(x^2 + 1) )


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences