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Maths
A Level

The curve C has equation: 2(x^2)y + 2x + 4y – cos(pi*y) = 17. Use implicit differentiation to find dy/dx in terms of x and y.

The first step is to differentiate both sides of this equation with respect to x - we will then be able to solve for dy/dx. Differentiating the right side of the equation gives d/dx(17)=0. We’ll different...

Answered by Pramey P. Maths tutor
6741 Views

Use the binomial series to find the expansion of 1/(2+5x)^3 in ascending powers of x up to x^3 (|x|<2/5)

We want to rearrange the expression to the form (1+y)^n so we can use the general result: (1+y)^n=1+ny+[n(n-1)/2]y^2+[n(n-1)(n-2)/3!]y^3+... 1/(2+5x)^3 = (2+5x)^-3 = [2(1+5x/2)]^-3 = (2^-3)(1+5x/2)^-3 usi...

Answered by Saskia J. Maths tutor
12148 Views

differentiate y=(5x-2)^5

25(5x-2)^4

Answered by Miss K. Maths tutor
3918 Views

Find the gradient of the curve (x^3)-4(y^2)=12xy at the point P(-8,8)

First of all differentiate the equation of the curve implicitly, giving:

3x2-8y(dy/dx)=12y+12x(dy/dx)

=> (dy/dx)(12x+8y)=3x2-12y

=> dy/dx=(3x2-1...

Answered by Franco Guglielmo R. Maths tutor
3644 Views

whats the integral of x.e^x wrt x

e^x(u-1)

Answered by Peter C. Maths tutor
4315 Views

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