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differentiate y=(4x^3)-5/x^2

to differentiate this equation we have to do it in two parts because there is a minus sign seperating them in the middle for the first part we first have to multiple the constant by what the power of x is wh...
GK
Answered by George K. Maths tutor
6286 Views

factorise fully- 8y + 4y2

First of all you need to separate the two numbers you have 8Y and 4y2 then ask yourself what you can divide both these 2 numbers with? so 4 can be divided by 4 and 8 can be divided by 4. so we can divide bot...
LL
Answered by Logan L. Maths tutor
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What is an easy way to remember how sin(x) and cos(x) are differentiated and integrated?

If you imagine that sin(x), cos(x), -sin(x) and -cos(x) are on a wheel as shown below: sin(x) -cos(x) cos(x) -sin(x) then going clockwise around the wheel you have what each term differentiates to, so sin(x)...
HE
Answered by Hannah E. Maths tutor
18863 Views

It is given f(x)=(19x-2)/((5-x)(1+6x)) can be expressed A/(5-x)+B/(1+6x) where A and B are integers. i) Find A and B ii) Show the integral of this from 0 to 4 = Kln5

Firstly, we are given that f(x) can be expressed in the above form, so we write this out: (19x-2)/((5-x)(1+6x)=A/(5-x)+B/(1+6x) We then multiply by the denominator of f(x): 19x-2=A(1+6x)+B(5-x) Now we can ch...
MW
Answered by Mike W. Maths tutor
6483 Views

Find the possible values of x for x^2 = 36-5x.

While this question may appear unfamiliar at first, it is just a quadratic equation in disguise. Rearranging such that it equals 0: x^2 + 5x - 36 = 0 Now this equation is ready to be solved! We can approach ...
BH
Answered by Ben H. Maths tutor
10154 Views