1st question: The equation 4+(3x)^2-x^3=k has 3 solutions for -2≤x≤4. State the range of values k.
1 answer:
Hello,
I don't know how to do this! (if you know , say it.
I have drawn the curves for k=4 to 9
and we only have 3 solutions if 4<k<8
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