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2 years ago

If f(x) = -x2+x-1 then value of f(f(2)) is

Physics

1 answer:

qaws [65]2 years ago

6 0

Answer:

-13

Explanation:

Function

f(x) = -x² + x - 1

Solving

Substitute 2 in place of x
f(2) = -(2)² + 2 - 1
f(2) = -4 + 2 - 1
f(2) = -3
f(f(2)) = f(-3)
f(-3) = -(-3)² - 3 - 1
f(-3) = -9 - 3 - 1
f(f(2)) = -13

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3 years ago

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Drupady [299]

Answer:

$4.5\times 10^{-5} T$

Explanation:

We are given that

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Substitute the values then we get

$B=\sqrt{(3.5\times 10^{-5})^2+(2.76\times 10^{-5})^2}$

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The resultant magnitude of magnetic field is same above and below the wire as it is at same distance.

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3 years ago

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4 years ago

Read 2 more answers

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Answer:

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Explanation:

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