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3 years ago

Limit as x approaches 9 of x^2 -81/sqrt of x - 3

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

7 0

Answer:

108

Step-by-step explanation:

Limit as x approaches 9 of x^2 -81/sqrt of x - 3

First substitute x into the expression

= 9²-81/√9 - 3

= 81-81/3-3

= 0/0 (indeterminate)

Apply l'hospital rule

= lim x -> 9 d/dx(x²-81)/√x - 3

= lim x -> 9 2x/1/2√x

Substitute x = 9

= 2(9)/1/2√9

=18/1/(2(3)

=18 × 6/1

= 108

Hence the limit of the function is 108

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Well,

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3 years ago

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3 years ago

I need help please i

balandron [24]

Answer:

2 7/24

Step-by-step explanation:

First we have to add the gallons of two cow of each owner:

Hank's cows: 4 3/4 + 4 1/8

Add the whole numbers:

4 + 4 = 8

Now for 3/4 and 1/8

Find common

6/8 + 1/8

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Put together :

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Add the whole number

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10 + 1 1/6

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Debra - 11 1/6

we can solve the question:

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4-21/24

-17/24

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~lenvy~

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Anna71 [15]

So 90 - (40*3) right ?

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3 years ago

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3 years ago