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Find dy/dx of y=x^2 + 2x+1

We differentiate each term individually with respect to x. the way we differentiate powers of x is: x^n goes to nx^(n-1). So x^2 would become 2x, 2x would be just 2 as x^0 is 1 and a constant would just disa...
VM
Answered by Vivek M. • Maths tutor
4628 Views

There are 150 men, women and children on a plane. For every 7 men there are 2 women, and for every 1 woman there are 3 children. How many men are on the plane?

This question involves ratios; men : women = 7:2; women : children = 1:3. We need to find a common number to combine the two ratios together. If we multiply the women:children ratio by 2, the ratio becomes 2...
NM
Answered by Noor M. • Maths tutor
6141 Views

The equation of the line L1 is y = 3x – 2 . The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel.

In order for two lines to be parallel, they need to have the same gradient (m). The gradient (m) is the coefficient of x in the line equation y=mx+c. Therefore, the gradient of L1 is 3 since 3 is the coeffic...
AK
Answered by Asimina K. • Maths tutor
4527 Views

find the roots of this following equation: 2x^2+18x+36

Factorisation question: Simplify equation as each function is divisible by 2 then factorise to find roots, roots must = x value when added roots must = constant when multiplied
JH
Answered by Jason H. • Maths tutor
3289 Views

What does differentiating do?

Differentiating is a process which you can apply to a function which lets you find the gradient (or slope) the function.
JL
Answered by Jack L. • Maths tutor
3585 Views