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Maths
GCSE

Let f(x)= x/5 + 1 . Find f^-1(x)

f^-1(x)= 5(x-1)

EC
Answered by Ella C. Maths tutor
2690 Views

Make x the subject of the formula y = x/3 -2a

y =x/3 - 2a
y + 2a = x/3
3y+6a = x

EC
Answered by Ella C. Maths tutor
8256 Views

How do we integrate a quadratic equation?

Increase the power by one and divide by the new powere.g. integrate x2+5x + 3Answer: x3/3 + 5x2/2 + 3x

SP
Answered by Sophia P. Maths tutor
3956 Views

Solve the simultaneous equations: 3x + y = 15 and 4y + 3 = 9x

The best way to solve simultaneous equations is by substitution. The first step is to pick a variable to eliminate. In this case, I'm going to choose to eliminate y because the first equation has a y on i...

SB
Answered by Samuel B. Maths tutor
4626 Views

I don't understand, what do you use sin, cos and tan for?

Sin, cos and tan are functions that help you work out either, the missing angle or one of the missing lengths of a side in a right angle triangle.To work out the missing angle you need two side lengths, d...

JD
Answered by Joe D. Maths tutor
2940 Views

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