Top answers

How do I integrate 3^x?

First I would ask what have they tried, and see if any of their attempts are on the right track - and then guide them from there, if not: 3^x is quite a difficult form to deal with, so is there any other way...
JW
Answered by Josh W. • Maths tutor
27082 Views

Why do we need the constant of integration?

Say that we have a differentiated equation f'(x), and we want to find the orginal equation f(x) from this. We would have to use integration, as differentiation and integration are the reverse of each other. ...
EM
Answered by Eleanor M. • Maths tutor
6345 Views

What is the integral of x^2 + 3x + 7?

X 2 -> 2X 3X -> 3 7 -> 0 Therefore X 2 + 3X + 7 integrates to 2X + 3
RD
Answered by Rhys D. • Maths tutor
4434 Views

Turning points of the curve y = (9x^2 +1)/3x+2

Use quotient rule to differentiate: dy/dx = (18x(3x+2) - 3(9x 2 +1))/(3x+2) 2 set dy/dx=0: 54x 2 + 36x - 27x 2 - 3 = 0 9x 2 + 12x - 1 = 0 solve quadratic to obtain values of x, and then find corresponding va...
JH
Answered by Jacob H. • Maths tutor
4153 Views

How do I calculate the reactant forces for the supports of the beam where the centre of mass is not same distance from each support?

This can be done by taking moments. To reduce the number of equations a moment should be taken so that one of the forces goes through the centre of place from which moments are being taken. We will choose to...
BW
Answered by Benjamin W. • Maths tutor
6942 Views