The Derivative (VCE SSCE Mathematical Methods): Quizzes

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The Derivative
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What formula gives the average rate of change of f(x)f(x) over interval [a,b][a, b]?

f(b)f(a)ba\frac{f(b) - f(a)}{b - a}

What is a tangent to a curve?

A line touching the curve at exactly 1 pt

What is the formal definition of the derivative f(x)f'(x)?

limh0f(x+h)f(x)h\lim_{h \to 0} \frac{f(x+h) - f(x)}{h}

What is the derivative of x2x^2?

2x2x

Evaluate limh0(22x2+20xh+h)\lim_{h \to 0} (22x^2 + 20xh + h)

22x222x^2

A chord is defined as:

A line segment joining 2 pts on a curve

If f(x)=3x2+2x+2f(x) = 3x^2 + 2x + 2, what is f(x)f'(x) by first principles?

6x+26x + 2

What is the central difference approximation for f(a)f'(a)?

f(a+h)f(ah)2h\frac{f(a+h) - f(a-h)}{2h}

How does instantaneous rate differ from average rate?

It's the rate at a specific pt, not interval

For f(x)=x3f(x) = x^3 at pt (2,8)(2, 8), what is the tangent gradient?

1212

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