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a) i) find dy/dx of y = 3x^4 - 8x^3 - 3 ii) then find d^2y/dx^2 b) verify that x=2 at a stationary point on the curve c c) is this point a minima or a maxima

So the first step is to find the first differential of yTo do this we simply have to differentiate:so with C being our coefficient, n being the power that x is.we need to reduce the power of x by 1, whilst m...
CM
Answered by Charlie M. • Maths tutor
3689 Views

When you are working out dy/dx = 0, why do you do this and what does it mean?

It relates back to what we actually mean why we say dy/dx. Simply put, dy/dx means the rate of change of y with respect to the rate of change in x over a infinitely small space of time. Therefore, when we ar...
MJ
Answered by Matthew J. • Maths tutor
32054 Views

Sketch the graph y=-x^3, using this sketch y=-x^(1/3)

The first step in figuring out this question is to first determine what the y=x 3 looks like.If you are not already fimilar with this function, you can use some basic principles to find out what it looks lik...
DO
Answered by Deloris O. • Maths tutor
5153 Views

y = Sin(2x)Cos(x). Find dy/dx.

Assume base differentiation knowledge: Sin(x) = Cos(x), Cos(x) = -Sin(x)The question combines the chain and product rule. To begin, start by splitting the equation: Sin(2x)Cos(x) = Sin(2x) x Cos(x)The produc...
SC
Answered by Saskya C. • Maths tutor
15938 Views

Find the equation of the tangent to the curve y=3x^3+x^2+5 at the point (1,9)

y=11x-2
EW
Answered by Ethan W. • Maths tutor
3924 Views