Given f is concave down and ƒ (4) = −2 and f1 (4) = 3. What is the estimate for = 4? Is it an underestimate or f (4.4) using the local linear approximation for ƒ at æ overestimate? -0.8 and overestimate -0.6 and underestimate -0.6 and overestimate -0.8 and underestimate

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