The variables x and y are related by y = 5^x. How do I find the value of x when y is set to 15?

15 = 5^x, we can easily solve this equation by using logs on either side which will give us: log15 = x log 5. Then by solving this for x, we get the result of 1.68 to two decimal places.

AB
Answered by Andrea B. Maths tutor

2794 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Given that y = exp(2x) * (x^2 +1)^(5/2), what is dy/dx when x is 0?


What does it mean when I get a negative value when I do a definite integral?


Determine the tangent to the curve y = sin^2(x)/x at the point, x = pi/2. Leave your answer in the form ax+by+c=0


write the vector equation of a line passing through (1,-1,2) and (2,2,2).


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