For the following function, find all its critical point(s) and its absolute extrema.
[ Note: If there is more than one answer enter separated by commas.]
f(x)=10sqrt(x^2+10)−3x0x14
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OpenStudy (anonymous):
please help because i need the answer now !
OpenStudy (anonymous):
3x0x14?
OpenStudy (anonymous):
Is that a zero-x in the second term?
OpenStudy (anonymous):
oh sorry its supposed to be 0<= x <=14
OpenStudy (anonymous):
the equation ends at ....-3x
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OpenStudy (anonymous):
take the derivative.
set it equal to 0.
And solve for x to find the critical point
OpenStudy (anonymous):
Check this point by plugging it into the original equations.
Check the boundary points 14, 0
Compare each of these and figure out which gives the biggest value.
OpenStudy (anonymous):
\[d/dx = \frac{(10 x)}{\sqrt(x^2+10)}-3 \]
OpenStudy (anonymous):
Some ugly algebra but you can soldier through it.
OpenStudy (anonymous):
can i pleaaaaase have the answer?
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OpenStudy (anonymous):
x = 3sqrt(10/91) <= it's pretty ugly which makes me think you mistyped the equation