Differentiation (AQA A-Level Mathematics): Quizzes

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First Principles Differentiation
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In first principles, what happens to the chord as h0h \to 0?

It becomes a tangent

What is the gradient of y=x2y = x^2?

2x2x

What is the first principles formula for the gradient of F(x)F(x)?

limh0F(x+h)F(x)h\lim_{h \to 0} \frac{F(x+h) - F(x)}{h}

Using first principles, what is the gradient of y=x4y = x^4?

4x34x^3

For F(x)=xnF(x) = x^n where nRn \in \mathbb{R}, what is the gradient?

nxn1nx^{n-1}

Which is NOT a name for the gradient formula?

The integral

How is dydx\frac{dy}{dx} pronounced?

dy by dx

In f(x)f'(x), what does the number of dashes indicate?

Times differentiated

Using first principles, dydx\frac{dy}{dx} for y=x2+2xy = x^2 + 2x is:

2x+22x + 2

For y=3x2+2xy = 3x^2 + 2x, what is dydx\frac{dy}{dx} when x=1x = 1?

88

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