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10 questions from this quiz
f(x)f(x)f(x) is increasing
f′(x)=0f'(x) = 0f′(x)=0
ax3+bx2+cx+dax^3 + bx^2 + cx + dax3+bx2+cx+d where a≠0a \neq 0a=0
2
At stationary points of f(x)f(x)f(x)
Above the xxx-axis
x=0x = 0x=0 and x=4x = 4x=4
f′(c)≈f(c+h)−f(c)hf'(c) \approx \frac{f(c+h) - f(c)}{h}f′(c)≈hf(c+h)−f(c)
f(x)f(x)f(x) is decreasing
Draw tangent; calculate its gradient
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