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gulaghasi [49]
3 years ago
10

I need help please,

Mathematics
1 answer:
lions [1.4K]3 years ago
6 0
2x = y- 10
x + 7 = y
2 y = 4 y = 4
x= -3
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Chuanxi planned a rectangular sidewalk with a length of 21 ft. He made a scale drawing using a scale factor of 1 in. = 7 ft. He
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Original Ratio of 1 in = 7 ft so 3 in = 21 ft
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If x=-7 and y=3x+2, then y equals what number?
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Use an appropriate Taylor series to find the first four nonzero terms of an infinite series that is equal to sin(5/2).
koban [17]

Answer:

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Step-by-step explanation:

The taylor series of the function sin(x) around zero is given by

sin(x)=\sum_{n=0}^{\infty}\dfrac{(-1)^k}{(2k-1)!}x^{2k+1}=x-\dfrac{x^3}{3!}+\dfrac{x^5}{5!}-\dfrac{x^7}{7!}

Therefore,

\sin(\frac{5}{2})=\dfrac{5}{2}-\dfrac{[\frac{5}{2}]^3}{3!}+\dfrac{[\frac{5}{2}]^5}{5!}-\dfrac{[\frac{5}{2}]^7}{7!}+...

hence the first four nonzero terms of the series are

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6 0
3 years ago
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