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MaRussiya [10]
3 years ago
14

Solve the problem.

Mathematics
1 answer:
miskamm [114]3 years ago
7 0

Answer:

0.7

Step-by-step explanation:

Find Explanation attached

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Whats the slope of (-1,4) and (-2,5)
12345 [234]

Answer:

the slope is -1

Step-by-step explanation:

rise over run

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Kathy swam 3 laps in the pool this week. She must swim more than 12 laps.
Marysya12 [62]

Answer:10

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3 years ago
96.3 cm measured to the nearest tenth of a cm
rjkz [21]

Answer:

96.3 cm measured to the nearest tenth of a cm is 100 cm

3 0
2 years ago
Write as a decimal. If a repeating decimal, round to the nearest hundredth.
Mamont248 [21]

Given:

\frac{475}{80}

Let's evaluate and find the quotient.

We have:

\frac{475}{80}=5.9375

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A repeating decimal is a decimal with digits or group of digits that repeats endlessly.

The decimal 5.937

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5.9375

6 0
1 year ago
Consider the function ​f(x)equalscosine left parenthesis x squared right parenthesis. a. Differentiate the Taylor series about 0
dybincka [34]

I suppose you mean

f(x)=\cos(x^2)

Recall that

\cos x=\displaystyle\sum_{n=0}^\infty(-1)^n\frac{x^{2n}}{(2n)!}

which converges everywhere. Then by substitution,

\cos(x^2)=\displaystyle\sum_{n=0}^\infty(-1)^n\frac{(x^2)^{2n}}{(2n)!}=\sum_{n=0}^\infty(-1)^n\frac{x^{4n}}{(2n)!}

which also converges everywhere (and we can confirm this via the ratio test, for instance).

a. Differentiating the Taylor series gives

f'(x)=\displaystyle4\sum_{n=1}^\infty(-1)^n\frac{nx^{4n-1}}{(2n)!}

(starting at n=1 because the summand is 0 when n=0)

b. Naturally, the differentiated series represents

f'(x)=-2x\sin(x^2)

To see this, recalling the series for \sin x, we know

\sin(x^2)=\displaystyle\sum_{n=0}^\infty(-1)^{n-1}\frac{x^{4n+2}}{(2n+1)!}

Multiplying by -2x gives

-x\sin(x^2)=\displaystyle2x\sum_{n=0}^\infty(-1)^n\frac{x^{4n}}{(2n+1)!}

and from here,

-2x\sin(x^2)=\displaystyle 2x\sum_{n=0}^\infty(-1)^n\frac{2nx^{4n}}{(2n)(2n+1)!}

-2x\sin(x^2)=\displaystyle 4x\sum_{n=0}^\infty(-1)^n\frac{nx^{4n}}{(2n)!}=f'(x)

c. This series also converges everywhere. By the ratio test, the series converges if

\displaystyle\lim_{n\to\infty}\left|\frac{(-1)^{n+1}\frac{(n+1)x^{4(n+1)}}{(2(n+1))!}}{(-1)^n\frac{nx^{4n}}{(2n)!}}\right|=|x|\lim_{n\to\infty}\frac{\frac{n+1}{(2n+2)!}}{\frac n{(2n)!}}=|x|\lim_{n\to\infty}\frac{n+1}{n(2n+2)(2n+1)}

The limit is 0, so any choice of x satisfies the convergence condition.

3 0
3 years ago
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