What are logarithms?

Logarithms allow us to calculate and manipulate indices in relation to regular numbers. The key thing to remember is that "logxy" begs the question "which power of x gives y". By this, we mean that we can write "y=xp" (where p is the unknown indice) as "logxy = p".

AM

Related Maths A Level answers

All answers ▸

Find the equation of the tangent to the curve y = 2x^2 + x - 1 at the point where x = 1.


Proof by Induction - "What's the point if we already know the answer?"


If y = 2^x, solve the equation 8(4^x) + 9(2^x) + 1 = 0 in terms of y.


How do you differentiate y=ln(x)