Question

The maximum and minimum values of expression
(4-2 cos ) respectively are
(1) 4 and 0
(2) 4 and 2
(3) 6 and 0
147 6 and 2
​

Answer 1

Heya!!

Given Question is ( 4 - 2 Cos x )

Maximum value of Cos x = 1

And

Minimum value of Cos x = - 1

So, Minimum value of given Function is

( 4 - 2 × -1 )

Minimum of given Function is = 6

Maximum value of given Function is

( 4 - 2 × 1 )

Maximum value of given Function is = 2

So, Minimum and Maximum value of given Function is ( 6 And 2 )

Answer 2

Answer:

Option 4 is right

Explanation:

Concept

• The minimum is the smallest value in the data set. The maximum is the largest value in the data set.

Find

Minimum and Maximum value

Solution

$-1\leq Cos\leq 1\\1\geq -Cos\geq -1\\-2\leq -2Cos\leq 2\\4-2\leq 4-2 Cos\leq 4+2\\2\leq 4-2Cos\leq 6$

Minimum Value=2

Maximum Value=6

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