Top answers

How do we integrate a quadratic equation?

Increase the power by one and divide by the new powere.g. integrate x 2 +5x + 3Answer: x 3 /3 + 5x 2 /2 + 3x
SP
Answered by Sophia P. • Maths tutor
5275 Views

dy/dx= 2x/2 - 1/4x, what is d2y/dx2?

(2x)/2= 2x^-2d2y/dx2= -4x^-1 - 1/4
GN
Answered by Gloria N. • Maths tutor
4817 Views

Find ∫(2x^5 -4x^-3 +5) dx

So we have to integrate these 3 terms one by one. To integrate 2x 5 you add 1 to the power of x, so that becomes 6, you then divide the coefficient by the new power of x. So 3/6=1/2 giving the integral of 2x...
PS
Answered by Peter S. • Maths tutor
7440 Views

Solve the simultaneous equations: 3x + y = 15 and 4y + 3 = 9x

The best way to solve simultaneous equations is by substitution. The first step is to pick a variable to eliminate. In this case, I'm going to choose to eliminate y because the first equation has a y on it's...
SB
Answered by Samuel B. • Maths tutor
5479 Views

I don't understand, what do you use sin, cos and tan for?

Sin, cos and tan are functions that help you work out either, the missing angle or one of the missing lengths of a side in a right angle triangle.To work out the missing angle you need two side lengths, depe...
JD
Answered by Joe D. • Maths tutor
3941 Views