Which of the following functions has a maximum y value of 4?

Mathematics

2 answers:

larisa86 [58]4 years ago

4 0

Answer:

y = 4cosx

Step-by-step explanation:

Since we have cosx lying between -1 and 1, we have

y =4cosx lying between 4(-1) and 4(1)

i.e. maximum value is 4.

II option is incorrect because cos4x has maximum value only as 1.

III option is also incorrect because cos(x)+4 has maximum as 1+4=5

IV option is also incorrect because cos(x+4) has maximum as 1

As a result we have out of 4 options given only I option satisfies the condition that the function has a maximum value of 4.

rusak2 [61]4 years ago

3 0

The answer is y<span> = 4cos</span><span>x </span>

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