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How can you add and subtract fractions with surds in them?

The square root sign can make fractions look a bit scary until you're familiar with it, that's the same with anything new! The important thing to remember is, the rules of algebra are the same - there are ju...
DH
Answered by Daisy H. • Maths tutor
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differentiate parametrically y=3t+4 and x=2t^2 +3t-5

first you differentiate both equations giving dy/dt = 3 and dx/dt = 4t+3 dividing dy/dt by dx/dt gives dy/dx and so the answer is 3/(4t+3)
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what is the point of intersection between the lines 3y-4x=12 and 2x=2y+3

As these are simultaneous equations you will need to get a coefficient of either x or y on one side and then substitute it within the other equation. Using the second equation you can divide by 2 leading to ...
BG
Answered by Benedict G. • Maths tutor
3034 Views

How to solve pully type questions in mechanics

T=9g/5 ms^-2m=2 kgtime for higest point = 7/2 sec
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Area of a shaded trapezium within a rectangle involving algebra.

I have a labelled screenshot of how to go about this question
OO
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