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Ipatiy [6.2K]
3 years ago
7

Which interval contains a local minimum for the graphed function?

Mathematics
2 answers:
DochEvi [55]3 years ago
4 0

Answer : Option D is correct i.e [2.5,4]

Explanation :

Suppose our function is f(x)

then the value of f(x) is minimum where

it reaches -0.44 and 3 with two different intervals .

As we know that for finding the local minimum ,

the criteria is that  f'(x)=0 .

So, here

f'(-0.44)=0 and

f'(3)=0

both are the local minimum point for the function f(x)

but -0.44 is the global minimum point .

In our case for [2.5,4] is the required interval where f(x) reaches its  local minimum.

Tomtit [17]3 years ago
3 0

Answer:

The correct option is D. The interval [2.5, 4] contains a local minimum for the graphed function

Step-by-step explanation:

According to the definition of local mimima, a function has local minima at c if

f(c)

for all values of x. where, x\in [c-\epsilon, c+\epsilon]

From the graph it is clear that the given function has local minima at (-0.44,-4.3) and (3,-4).

-0.44\notin [-4, -2.5], 3\notin [-4, -2.5]

Therefore option A is incorrect.

-0.44\notin [-2, -1], 3)\notin [-2, -1]

Therefore option B is incorrect.

-0.44\notin [1, 2], 3\notin [1, 2]

Therefore option C is incorrect.

-0.44\notin [2.5, 4], 3\in [2.5, 4]

Therefore option D is correct.

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