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Why is my answer incorrect?

Check for any silly mistakes, a lost negative or a simple arithmetic error. If you can’t find any, we’ll work through the question together and see where the method differs from yours. Then we will work out ...
ZG
Answered by Zachary G. • Maths tutor
3337 Views

∫ (ln(x)/(x*(1+ln(x))^2) dx

use u = 1+ln(x) as the substitution du/dx = 1/xdx = x du ∫ (ln(x)/(x*(1+ln(x))^2) dx = ∫ ((u-1) x/ x (u^2)) du = ∫ (u-1)/(u^2) du
JB
Answered by Jack B. • Maths tutor
8393 Views

A circle C has centre (-5, 12) and passes through the point (0,0) Find the second point where the line y=x intersects the circle.

The equation of a circle comes in a standard format of (x-a) 2 + (y-b) 2 = r 2 where (a, b) are the coordinates of the centre of the circle and r is the radiusFrom the information, we can find the radius of ...
Answered by • Maths tutor
6251 Views

Differentiate Sin^2(X) with respect to X

'With respect to X' means we will be differentiating all the X parts (To put it simply). First we show that the differential of Sin(X) is Cos(X), we can show this graphically using the whiteboard. Then we sh...
TH
Answered by Thomas H. • Maths tutor
16184 Views

A particle, P, moves along the x-axis. The displacement, x metres, of P is given by 0.5t^2(t^2 - 2t + 1), when is P instantaneously at rest

differenciate and then eqate with v = 0.
HS
Answered by Harry S. • Maths tutor
7217 Views