Max values of a function in a given interval
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Find the maximum of f(x) = x^4 = 6x^3h + 11x^2h^2 - 6xh^3 at [0,3h]
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Solution Summary
In this solution, we find the point(s) within a given interval where a polynomial function may possibly have local maximum value (maxima). We estimate maximum value of the function at the point.
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f(x) = x^4 - 6 x^3 h + 11x^2 h^2 - 6 x h^3
can be factorized as:
f(x) = (x - 0) * (x - h) * (x - 2h) * (x - 3h)
Hence, f(x) intersects with X axis at points x =0; x = h; x = 2h & x = 3h
As, in f(x), coefficient of x^4 is +ve, therefore, the function f(x) is monotonically increasing for x > 3h
After intersection with X ...
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- BEng, Allahabad University, India
- MSc , Pune University, India
- PhD (IP), Pune University, India
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