Question

In: Math

1. For each, circle either True or False. please add an explanation to each one so...

1. For each, circle either True or False. please add an explanation to each one so i can understand the reasoning  

(a) (1 point) A continuous function is always integrable. T/F

(b) (1 point) A differentiable function is always continuous. T/F

(c) (1 point) An integrable function is always differentiable. T/F

(d) (1 point) If c is a critical value of function f then f(c) is a relative maximum. T/F

(e) (1 point) If c is a relative minimum of function f then c is a critical value of f. T/F

(f) (1 point) If f is not differentiable at a then f(a) does not exist. T/F

(g) (1 point) f00(c) = 0 implies c is an infection point. T/F

(h) (1 point) A relative maximum is always an absolute maximum. T/F

Solutions

Expert Solution

A continuous function is always integrable. (TRUE)

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A differentiable function is always continuous. (TRUE)

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An integrable function is always differentiable (False)

Because we know that a function with a finite number of point of discontinuity is Riemann Integrable. But this discontinuous function is not differentiable because we know the discontinuous function is not differentiable.

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If c is a critical value of function f then f(c) is a relative maximum. (False)

Because of relative minimum depends upon the second-order derivative of that function.

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If c is a relative minimum of function f then c is a critical value of f. (True)

Because of the first condition for a point to be a relative minimum is to be a critical point.

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If f is not differentiable at a then f(a) does not exist. (False)

Counter Example: let, f(x)=|x| for all real number x.

Then the graph of f has a sharp point at (0,0)

We know that the existence of such a sharp point is the cause of not differentiability. i.e. f is not differentiable at x=0 but f(0)=0

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f00(c) = 0 implies c is an infection point.

for this statement ''f00(c)'' is not understandable.

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A relative maximum is always an absolute maximum. (False)


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