Top answers

Simultaneous equations - Find the values of y and x: 3

3x + 5y = 19 and4x - 2y = -18Find the common multiple for 3x and 4x to enable it to be cancelled out. In this case it would be 124(3x + 5y) = 4(19) 3(4x - 2y) = 3(-18) 12x + 20y = 76 12x - 6y = -54 12x + 20y...
ZU
Answered by Zyen U. • Maths tutor
3658 Views

What is the product rule in differentiation?

The product rule is a special rule that exists for differentiating products of two (or more) functions. It states: If y= uv , then dy/dx= u (d v /dx) + v (d u /dx) . So when we have a product to differentiat...
IA
Answered by Ife A. • Maths tutor
5556 Views

2x + y = 24, x - y = 6

x = 10, y = 4
CM
Answered by Casimir M. • Maths tutor
3350 Views

d/dx[sin(x) + cos(x)]

cos(x) - sin(x)
CM
Answered by Casimir M. • Maths tutor
4155 Views

What is the sum of the first 100 numbers of the following sequence- 4,12,36, 108, .........

This question is about geometric sequences. The first step in solving this question is identifying that each term is multiplied by 3 to get to the next term.Therefore since the formula for finding the sum of...
HG
Answered by Harry G. • Maths tutor
4181 Views