Search our library of Maths questions

Top answers

Maths

All levels

Solve 5x – 2 > 3x + 11.

We need to solve this inequality to find the value that x could be greater or less than. First, we need to find the smallest positive x value, which is 3x. Then, we minus 3x from both sides, so only one s...

Answered by Rebecca M. • Maths tutor

5904 Views

In this question, take 'log' to mean 'log base 5'. Solve the equation log(x^2-5)-log(x) = 2*log(2)

Note that you can not take a positive base log of a negative number. log₅(x²-5) - log₅(x) = 2log₅(2) => log₅((x²-5)/x) = log₅

Answered by Milan L. • Maths tutor

3171 Views

Solve the

Answered by Milan L. • Maths tutor

3279 Views

Find dy/dx such that y=(e^x)(3x+1)^2.

We will solve this question with the knowledge that dy/dx = u.(dv/dx) + v.(du/dx), where y=u.v We have y=e^x(3x+1)^2. First, we want to find u & v. By splitting the function, we have that u=e^x and v=...

Answered by Stefanie B. • Maths tutor

4134 Views