[-3,3) (-3, 3] (-3, 3) [-3, 3]




(-3, 3]

(-3, 3)

[-3, 3]


1 Answers

jitender lakhanpal
62 Points
9 years ago

the answer is [-3 to 3]

as 3+x + x^2    has value greater than 0 for all x so

the cosine function will have value b/w [-1,1]


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