Solve the polynomial inequality and graph the solution set on a number line.x2 + 14x + 49 ? 0

A. (-?, ?)

B. (-?, -7]

C. [-7, ?)

D. ?


Answer: A

Mathematics

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Given f (x, y) = cos (e2x+ y ), find ?2f / ?x?y

What will be an ideal response?

Mathematics