2 years ago

WILL MARK BRAINLIEST IF RIGHT Find the average value of f(x)=e2x over the interval [2, 4].

Mathematics

1 answer:

KonstantinChe [14]2 years ago

7 0

Answer:b

Step-by-step explanation:

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An equation in the form ax2+bx+c=0 is solved by the quadratic formula. The solution to the equation is shown below.x=−7±√ "572"

jolli1 [7]

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B: a = 1, b= 7, c = -2

Step-by-step explanation:

Quadratic Formula

$x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\quad\textsf{when}\:ax^2+bx+c=0$

Given:

$x=\dfrac{-7\pm\sqrt{57}}{2}$

Comparing the terms of the given x-value with those of the quadratic formula:

$\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}=\dfrac{-7\pm\sqrt{57}}{2}$

Therefore:

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Using the found values of a and b to solve for c:

$\implies b^2-4ac=57$

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