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kap26 [50]
3 years ago
11

How do you find the answer for f(5) when f(x)= -3x^4+7x^2-2

Mathematics
1 answer:
ololo11 [35]3 years ago
8 0
You find f(5) the same way you evaluate any function. Put the number where the variable is and do the arithmetic.

When high powers are involved, it can simplify the arithmetic a little to do some factoring:
.. f(x) = (-3x^2 +7)*x^2 -2
.. f(5) = (-3*25 +7)*25 -2 = -68*25 -2
.. f(5) = -1702
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Answer:

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Step by step:

1) 5x-5+5 = -45+5 : Add 5 to both sides

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Hope that helps

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Answer:

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Step-by-step explanation:

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-5x-2y=13 (i)

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A car of 1000 kg starts to move from rest and travels a distance of 150 m in 10 second. How much force is needed?​
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\\ \sf\longmapsto s=ut+\dfrac{1}{2}at^2

\\ \sf\longmapsto 150=0(10)+\dfrac{1}{2}a(10)^2

\\ \sf\longmapsto 150=\dfrac{1}{2}\times 100a

\\ \sf\longmapsto 50a=150

\\ \sf\longmapsto a=\dfrac{150}{50}

\\ \sf\longmapsto a=3m/s^2

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Using newtons second law

\\ \sf\longmapsto F=ma

\\ \sf\longmapsto F=1000(3)

\\ \sf\longmapsto F=3000N

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