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andrew11 [14]
3 years ago
12

Suppose that ƒ is an odd function of x. Does knowing that limxs0+ ƒ(x) = 3 tell you anything about limxs0- ƒ(x)? Give reasons fo

r your answer
Mathematics
1 answer:
bonufazy [111]3 years ago
6 0

we are given

f(x) is a odd function

so, f(-x)=-f(x)

-f(x)=f(-x)

now, we are given

\lim _{x\to 0+}f\left(x\right)=3

Let's multiply both sides by -1

-\lim _{x\to 0+}f\left(x\right)=-3

\lim _{x\to 0+}-f\left(x\right)=-3

we have

-f(x)=f(-x)

\lim _{x\to 0+}f\left(-x\right)=-3

now, let's consider y=-x

so, when x--->0+

but for y=-x

y--->0-

now, we can plug it

\lim _{y\to 0-}f\left(y\right)=-3

replace y as x

we get

\lim _{x\to 0-}f\left(x\right)=-3.................Answer

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Step-by-step explanation:

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Riley is saving up to buy a new television. She needs a total of $1,049.77. Riley has saved $200.79 already and earns $77.18 per
Xelga [282]

11 weeks are required for Riley to work to save enough money to buy the new television

<h3><u>Solution:</u></h3>

Given that Riley needs a total of $1,049.77

Riley has saved $200.79 already and earns $77.18 per week at her job

To find: Number of weeks Riley need to work to save enough money to buy the new television

Remaining amount needed = $1,049.77 -  $200.79

Remaining amount needed = $ 848.98

Let "n" be the number of weeks Riley need to work to save enough money to buy the new television

Also she earns $77.18 per week at her job

1 week ⇒ $ 77.18

"n" weeks ⇒ $ 848.98

Therefore, by cross multiplication,

n \times 77.18 = 1 \times 848.98\\\\n = \frac{848.98}{77.18}\\\\n = 11

Therefore 11 weeks are required for her to work to save enough money to buy the new television

<h3><u>Method 2:</u></h3>

<em>Total amount = amount already saved + ($77.18 per week at her job)("n" weeks)</em>

1,049.77 = 200.79 + (77.18)(n)

1049.77 - 200.79 = 77.18n

848.98 = 77.18n

n = \frac{848.98}{77.18}

n = 11

Therefore 11 weeks are required for her to work to save enough money to buy the new television

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3 years ago
What percent of 16 is 10
e-lub [12.9K]

62.5 is the answer to your question

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Write an algebraic expression that Marshall can use to determine the total cost of buying a watermelon that weighs w pounds and
VMariaS [17]

Answer:

The answer is that the cost will be a total of: $142.05. That is $125.80 for Watermelon that weighs 185 lbs and $16.25 for 5 lbs of tomatoes.

Step-by-step explanation:

Given: Watermelons are .68 / lb and tomatoes are 3.25 / lb.

Let w = watermelon weight and tomato weight.

An equation would be:

.68w + 3.25t = Total cost

For 185 lb of Watermelon and 5 lbs of tomatoes:

.68(185) + 3.25(5) =

$125.80 + $16.25 = $142.05

3 0
3 years ago
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