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Eddi Din [679]
3 years ago
12

Without using a calcuator, determine the number of real zeros of the function f(x)=x^3+4x^2+x-6

Mathematics
1 answer:
Natalija [7]3 years ago
5 0

Answer:

-3, -2, 1

Step-by-step explanation:

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How many feet does it take to make a 6 foot circle?
masha68 [24]
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3 years ago
NEED THE ANSWER ASAP PLEASE
Irina-Kira [14]

It's a linear program; the extrema will be at the corners.

Let's enumerate them.  4 choose 2 gives 6 possible meets of 4 lines.  One pair are parallel, down to five to try.

4x-y=1 intersects x=0 at y=-1, outside the domain y≥0.

4x-y=1 intersects y=0 at x=1/4, (1/4, 0)

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(0,0) is outside the domain 4(0)-0=0 which isn't ≥1.

(5,0) is a valid corner.

It's a triangular domain.  Three points to try,

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C(5,19) = 6(5) + 2(19) = 68

C(5,0) = 6(5) + 2(0) = 30

Answer: Maximum C=68 at (x,y)=(5,19)

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