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zepelin [54]
3 years ago
6

Find the range of y= 3/2 cos 4x-1

Mathematics
2 answers:
hoa [83]3 years ago
6 0

Answer:

The range of y is [-\dfrac{5}{2},\dfrac{1}{2}]

Step-by-step explanation:

Given: y=\dfrac{3}{2}\cos (4x) -1

It is cosine function of trigonometry.

We need to find the range of given function. The value of y shows range of function.

y is depends on cosine function.

As we know cosine max/min value is fixed.

y is max when cosine max.

y is min when cosine is min.

Maximum value of cosine = 1

y_{max}=\dfrac{3}{2}(1) -1=\dfrac{1}{2}

Minimum value of cosine = -1

y_{min}=\dfrac{3}{2}(-1) -1=-\dfrac{5}{2}

Range of y: [min,max]

Range: [-\dfrac{5}{2},\dfrac{1}{2}]

Hence, The range of y is [-\dfrac{5}{2},\dfrac{1}{2}]

Furkat [3]3 years ago
5 0
I have attached how to work through this problem. I hope this helps

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