What are the values that a and b can take so that f(x)= ax^2 + bx -sin3x has a local maximum when x=0 ? Thanks in advance
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Originally Posted by sebasto What are the values that a and b can take so that f(x)= ax^2 + bx -sin3x has a local maximum when x=0 ? Thanks in advance To have a local max at zero and Using these two gives So this function has a max at zero anytime Here is a graph with a=-1 (black),-3 (red) ,-5 (blue)
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