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4 years ago

F(x) = x^-1, x=.9. Use linear approximation to estimate answer

1 answer:

8 0

L(x) = f'(a)(x - a)
f(x) = x^(-1), f'(x) = -x^(-2)
Let a = 1, f'(a) = -(1)^(-2) = -1
L(0.9) = f'(1)(0.9 - 1) = -1(-0.1) = 0.1

Therefore, linear approximation of f(x) = x^(-1) for x = 0.9 is 0.1

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You are the manager of a store and business is a little slow. The best way to attract more customers is to have a sale. Here are

tatyana61 [14]

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Step-by-step explanation:

if you do A then you are losing 50% of your profit on for items

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4 years ago

The Slope of the Line:

Paladinen [302]

Answer:

3/-1

Step-by-step explanation:

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3 years ago

1/4m + 3/4m - 3/8(m+1)

sammy [17]

Distribute 3/8 to m and 1 so now the equation should be 1/4m + 3/4m - 3/8m + 3/8

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4 years ago

Vanessa buys a strip of 25 postage stamps the stamps is 21 7/8 inches long how long is it after Vanessa uses on stamp

zloy xaker [14]

To get the answer we have to multiply 25 times 21 7/8. To do that we have to transform 21 7/8 into improper fraction and thn multiply 25 times numerator.
$21 \frac{7}{8}= \frac{21*8+7}{8}= \frac{175}{8}$
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3 years ago

Please help me thank you

Lunna [17]

Answer:

418

Sn = ∑ 3 +4(n-1)

n=1

Step-by-step explanation:

3,7,11,15,.....1671

a1 =3

d = 4 (7-3=4)

an = a1 + d(n-1)

an = 3 +4(n-1)

We need to determine the last term

1671 = 3 +4(n-1)

Subtract 3

1671-3 = 3-3 +4(n-1)

1668 = 4(n-1)

divide by 4

1668/4 = 4(n-1)/4

417 = n-1

Add 1 to each side

418 = n

418

Sn = ∑ a1 +d(n-1)

n=1

418

Sn = ∑ 3 +4(n-1)

n=1

8 0

3 years ago