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Maths
A Level

find the definite integral between limits 1 and 2 of (4x^3+1)/(x^4+x) with respect to x

first notice the integral is in the form f'(x)/f(x), and indefinite integrals of this form are ln|f(x)|+c.
therefore the integral is [ln|x4+x|] between limits 1 and 2.
subbing in li...

TD
Answered by Tutor22645 D. Maths tutor
4397 Views

Form the differential equation representing the family of curves x = my , where, m is arbitrary constant.

Differentiating the above equation with respet to y:dx/dy = m;Substituting the value of m in the given form:x = (dx/dy) y i.e. the solution is(dx/dy) y - x = 0

PS
Answered by Piyush S. Maths tutor
8088 Views

Find the positive value of x such that log (x) 64 = 2

Find the positive value of x such that logx64 = 2
Using the logarithm rules, we know that we can rearrange the given equation into the form:
x2 = 64
Knowing this, we s...

SG
Answered by Santiago G. Maths tutor
18490 Views

Show that the equation 5sin(x) = 1 + 2 [cos(x)]^2 can be written in the form 2[sin(x)]^2 + 5 sin(x)-3=0

First, we need to realise that we will be using the trigonometric identity sin(x)2 + cos(x)2 = 1
As our goal is to end up with an equation involving only sin, we will therefore ...

SG
Answered by Santiago G. Maths tutor
17396 Views

Integrate the function : F'(x)=3x^2+4x-5

F'(x)=3x^2+4x-5
F(x)=(3/(2+1))(x^(2+1))+(4/(1+1)) (x^(1+1))-5(x^(0+1))

Answer: F(x)=x^3+2x^2-5x+c

IM
Answered by Ian Malique D. Maths tutor
7873 Views

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