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What is the differential of y =sin(2x)?

For this question we have to use the chain rule. The chain rule is dy/dx (the differential you are looking for) = du/dx (the differential of u with respect to x) * dy/du(the differential of y with respect...

CU
Answered by Cem U. Maths tutor
7109 Views

How do I rearrange this equation for x? y=(x+2)/(3x-1) +2

First of all we must consider the fraction. To eliminate this we multiply both sides through by 3x-1. We then end up with y(3x-1)=(x+2)+2(3x-1). The next step is to expand out the brackets and collate ter...

CM
Answered by Charlie M. Maths tutor
4493 Views

Show (4+5/7) - (2+1/3) as a single mixed fraction.

Mixed number -> top heavy fraction: 4 + 5/7 = ((47)+5)/7 = (28+5)/7 = 33/7 2+ 1/3 = ((23)+1)/3 = (6+1)/3 = 7/3 Common denominator by multiplying by each others: 33/7 = (333)/(73) = 99...

ER
Answered by Ethan R. Maths tutor
3706 Views

Solve: 5x - 11 = 3x +3 for x

Step 1: Identify Variables: 5x, 3x, Step 2: take the smaller one to other side with change in sign: 5x-3x-11= 3 Step 3: Take constants to other side with change in sign: 5x-3x = 3 +11 Step 4: Simplify on ...

RA
Answered by Rizwan A. Maths tutor
6394 Views

For what value of "radius r" is the perimeter of a circle equal to its area?

Quickest Way:

Put Area = Circumference

Pi x r x r = 2 x Pi x r

Using Cancellation of equations,

r = 2

Important: Trial and error takes time - Cannot do while doing a gra...

RA
Answered by Rizwan A. Maths tutor
4581 Views

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