ortegamagellynt
25.09.2019 •
Mathematics
Find any relative extrema of the function. (round your answers to three decimal places.) f(x) = arcsec(x) − 9x
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Ответ:
2. In short we are looking for the solutions of f'(x)=0
3. f'(x)= -9=0
Notice: so that the square root of this expression exists. So x1 or x -1
Also in notice that the root is always positive and 1/9 is positive, so x must be positive. This second condition, combined with the first one tells us that the solution is in x1
4.
Square both sides
let
Then the 4th degree equation becomes the quadratic equation
The discriminant D=
is not considered as so t cannot be negative
x=
Ответ:
saturday 1:39
Step-by-step explanation:
common sense