Let f(z) = 14+7z| Then for z <-. f'(z) = The left-hand derivative of f(=) at z = is The right-hand derivative of f(=) at = = = is Is f(z) differentiable at = = −? Answer (Y/N). Mark the following statements T or F, according as to whether they are true or false f(z) is differentiable on the closed interval (-∞, -] f(z) is differentiable on the open interval (-00,-) f(z) is differentiable on the closed interval (-7,00) f(z) is differentiable on the open interval (4.00)

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