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How does differentiation work?

Differentiation is essentially a method of finding the gradient of a function. To put that in better terms, imagine you have a graph of y=x, this is a straight line which means the gradient will always be th...
AG
Answered by Anthony G. • Maths tutor
3860 Views

What is the sum of 3/5 and 7/8?

First of all we need to find a common denominator. This is the smallest number that can be divided by both 5 and 8, which is 40. 24/40 + 35/40 Method: 5 goes into forty 8 times and so we must multiply the 3 ...
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Answered by Benjamin R. • Maths tutor
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For the following right angled triangle find the value of x to 1 dp.

x/4 = cos(50 o ) x = 4cos(50 o ) x = 2.6cm (1dp)
AP
Answered by Angus P. • Maths tutor
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Solve the simultaneous equations equation 1: 2x+3y=4 and equation 2: 5x+6y=7

This question can be solved by many methods but the elimination method is the fastest one in this case. The unknown that will be eliminated is y. Equation 1 is multiplied by 2 to give 4x+6y=8. Since I have c...
MP
Answered by Marilena P. • Maths tutor
5460 Views

Rearrange the following equation to make 'm' the subject: 4 (m - 2) = t (5m + 3) [4 marks]

Expand brackets on both sides: 4m − 8 = 5mt + 3t Collect all terms containing 'm' to one side of the equation: 4m − 5mt = 8 + 3t Factorise the terms containing 'm': m (4 − 5t) = 8 + 3t Divide by factorised v...
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Answered by Nadia M. • Maths tutor
4594 Views