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3 years ago

Determine which of the following are functions. Select all that apply.

Mathematics

2 answers:

Firlakuza [10]3 years ago

8 0

Answer:

I am led to believe the answers are 4 and 1

Step-by-step explanation:

I don't think its answer 2 because thou are radios and their isn't any fractions in it

I solved answer 4 it came as a fraction

Okay i looked at 1 and i did all of them they all came out as a decimal so i think that's another one

answer 3 you can't divide by 0 so i don't think so

Aleksandr [31]3 years ago

4 0

Answer:

a,d

Step-by-step explanation:

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2 years ago

Find the nth maclaurin polynomial for the function. f(x) = 5x − 5 x + 1 , n = 4 p4(x)

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Assuming the function is $f(x)=\dfrac{5x-5}{x+1}$ , and not $5x-5x+1=1$ which would be its own Maclaurin polynomial right away.

$\dfrac{5x-5}{x+1}=\dfrac{5(x-1)}{x+1}=\dfrac{5(x+1-2)}{x+1}=5-\dfrac{10}{1+x}$

Recall the geometric power series,

$\displaystyle\sum_{n=0}^\infty x^n=\frac1{1-x}$

where $|x|$ . Replace $x\mapsto-x$ and we have

$\displaystyle\sum_{n=0}^\infty (-x)^n=\frac1{1+x}$

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$f(x)=5-10\displaystyle\sum_{n=0}^\infty(-x)^n$

We want the 4th degree polynomial, so

$p_4(x)=-5+10x-10x^2+10x^3-10x^4$

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