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How to integrate lnX?

Firstly I would ask the student what different ways of integration do we know so far? After eliminating each possibility, such as the answer is not XlnX, as this differentiates via product rule, the stude...

Answered by Siam R. • Maths tutor

3419 Views

Work out the area of this triangle given the lengths of 1 sides (a) and 2 angles (A and B) using either the sine rule

We know the area of any triangle is equal to 0.5abSin(C). This means we need to find the length of side b and the angle C.First we can work out the angle C of the triangle as we know the angles in a trian...

Answered by Risha A. • Maths tutor

3575 Views

How to differentiate y=2x(x-2)^5 to find dy/dx?

Firstly, you should formulate the problem by using the product rule, which is: dy/dx = u'v + v'uBy assigning u=2x and v=(x-2)

Answered by Anup P. • Maths tutor

5091 Views

Solve for x and y: x ^2 +2y = 9,y = x + 3

Replace y with x + 3. x^2 + 2(x+3) = 9
2) Expand the bracket, and subtract 9. x^2 + 2x - 3 = 0
3) Factorise the quadratic(x - 1)(x + 3) = 0
4) Therefore, x has 2 solutions. x = 1 and ...

Answered by Changavy K. • Maths tutor

2505 Views

what is 87% of 654

First, lets find 1%. TO do this, divide 654 by 100. This is because 654 is 100%, so 654/100 is 100/100% = 1%. Now that we have 1%, multiply this by 87 to find out what is 87%.

Answered by Nikita Z. • Maths tutor

883 Views