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Maths
A Level

Let f(x) = x * sin(2x). Find the area beneath the graph of y = f(x), bounded by the x-axis, the y-axis and the line x = π/2.

After short consideration, we see that we must integrate f(x) with respect to x, between 0 and π/2, using integration by parts. Taking the formula for integration by parts, we set u = x and dv/dx = sin(2x...

BC
Answered by Benjamin C. Maths tutor
4321 Views

How to expand squared brackets?

Take, for example, the bracket (a+5)^2. The longer way to do it would be to write (a+5)^2 as (a+5)(a+5) and multiply out that way. However, there is a shorter way where all you have to do is square the fi...

DC
Answered by Diana C. Maths tutor
32379 Views

What is integration?

Integration is the reverse of calculating the derivative in maths. We can use integration to determine the area under a graph between to x values. I will demonstrate a basic integration question to show y...

DH
Answered by Dorothy H. Maths tutor
3242 Views

Differentiate x^(4) + x^(1/2) + 3x^(5)

When considering a term in the form of xn, we use the rule nxn-1 when differentiating.

So, we multiply the power of x by the coefficient (number in front) of x and then minus ...

EP
Answered by Emily P. Maths tutor
3110 Views

Solve the simultaneous equations: x^2 + 8x + y^2; x - y = 10.

Label the two equations.

x2 + 8x + y2 = 84 (1)
x - y = 10 (2)

Rearrange (2) to get y = x - 10 and substitute for y in (1) to get x2 + 8x + (x - 10)

LT
Answered by Lewis T. Maths tutor
4745 Views

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