# 2.2

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1. A rechargeable battery is plugged into a charger. The graph shows C(t), the percentage of full capacity that the battery reaches as a function of time t elapsed (in hours).
2. Let f(x) = x^3
3. Find the derivative of the function using the definition of the derivative. f(x) = 1x/2 – 1/10
4. Find the derivative of the function using the definition of the derivative.
F(x) = 7.5x^2 – x + 2.8
5. Find the derivative of the function using the definition of the derivative.
G(t) = 3/t^1/2
6. Find the derivative of the function using the definition of the derivative.
g(x) = sqrt(5 – x)
8.The graph of f is given. State the numbers at which f is not differentiable.
9. The graph of f is given. State the numbers at which f is not differentiable.
10. Use the definition of the derivative to find f’(x) and f’’(x).
f(x) = 4x^2 + 3x + 3
11. If f(x) = 2x^2 – x^3, find f’(x), f’’(x), f’’’(x), and f(4)(x).
12. If f(t) = t^1/3 and a cannot = 0, find f’(a).