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1. Find the equation of the The function f (x) = (1 + sin x)2 is concave up at x = 0. 2. What is the estimate for f (0.2) 3. Is it an underestimate or tangent line of f at x = 0. using the local linear overestimate? Explain. approximation for f at x = 0? g is concave down, g(1) = -4, and g' (1) = 3. 4. Use the tangent line to the graph of g at x = 1 to 5. Is it an underestimate or overestimate? Explain. find an approximation of g (1.1)