3 years ago

What is the reciprocal of 9/2 and of 4/7 !pleasssee

Mathematics

1 answer:

Kitty [74]3 years ago

6 0

Answer:

2/9 and 7/4(or 1 3/4)

Step-by-step explanation:

A reciprocal is just the original number flipped.

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3 years ago

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Ghella [55]

Answer:

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3 years ago

f(x) = square root ( x^4 -16x^2) let f be the function given by: . . a) Find the domain of f.. b) Find f '(x). c) Find the slope

Bond [772]

A ) The domain:
$x^{4} -16 x^{2} \geq 0 \\ x^{2} ( x^{2} -16) \geq 0 \\ x^{2} -16 \geq 0 \\ x^{2} \geq 16$
x ≤ -4 and x≥ 4 or: x ∈ ( - ∞ , - 4 ) ∪ ( 4 , + ∞ )
b ) f ` ( x ) = $\frac{1}{2 \sqrt{ x^{4} -16 x^{2} } } *( 4 x^{3} - 32 x ) = \\ = \frac{2x( x^{2} -8)}{ \sqrt{ x^{4}-16 x^{2} } }$
c ) The slope of the line normal to the graph at x = 5
m = -1 / f `(x)
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m = - 3/34

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3 years ago