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I already done this.

I already done this.

Answered by Ihar D. Maths tutor
3360 Views

How do I find the equation of a line that's perpendicular to another one?

Remember that the equation of a line is y=mx+c and m is the gradient of the line. The gradient of a perpendicular line will be the negative reciprocal of m ( that just means it will be -1/m). You can then...

Answered by Verity P. Maths tutor
2996 Views

Prove that sqrt(2) is irrational

First, let's assume that sqrt(2) is rational. That is, it can be expressed in the form a/b, where a and b are integers and the fraction is simplified as far as possible.
So we have sqrt(2) ...

Answered by Mark W. Maths tutor
4006 Views

How do polar coordinate systems work?

A polar coordinate system is just another method to determine a position of a point in space just like the cartesian coordiante system does; which hopefully you are confident with now. At A-level all you ...

Answered by Alexander M. Maths tutor
2851 Views

Use the substitution u = 2^x to find the exact value of ⌠(2^x)/(2^x +1)^2 dx between 1 and 0.

First thing to notice here is that this question tells us exactly what method they want us to use, subsitution, and what to substitute. Hence the first step is to turn the integral provided which is curre...

Answered by Alexander M. Maths tutor
15719 Views

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