Search over 10,000 free study notes

You can use pythagoras' theorem to find the length of a side of a right angled triangle, provided that at least two of the lengths of the sides are known. The general rule is a² + b²...

Write down all the information they have given you so There is 50 people 21 male so therefore 50 -21 = 29 females It says 6 out of 8 people who had apples were female so that means 8 people had apples App...

y=sin(x²) + e^x Firstly we need to differentiate. dy/dx = 2xcos(x²) + e^x using the chain rule Notice the gradient at x = sqrt(pi) is found when we sub x into dy/...

Let x = 0.2(54) = 0.2545454...

Then 100x = 25.454545... = 25.4(54)

So 99x = 100x - x = 25.4(54) - 0.2(54) = 25.2

Hence 990x =252

Therefore x = 252/990 = 14/55

This question requires integration by parts, using the formula:

Integral(u dv) =  u v - integral(v du) 

This is applied to find the integral of Ln(x) by writing Ln(x) as 1 * Ln(x), u is then...