1. A function f(t) is continuous and differentiable, and has values given in the table below. 1.0 1.2 1.4 1.6 1.8 0.1 0.2 0.4 0.7 1.1 t f(t) Fill in the table with approximate values for the function ƒ'(t). 1.4 t f'(t) 1.0 1.2 1.6 1.8

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