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3 years ago

What is the answer to this problem?..

Mathematics

2 answers:

OlgaM077 [116]3 years ago

3 0

28 on top and 15 in the bottom so 28 15

stich3 [128]3 years ago

3 0

I would be 1 and 13/15
4 7 28 13
__ x _ = __ = 1 __
15 1 15 15
(7 would be 7/1)

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If the local linear approximation of f(x) = 2cos x + e^2x at x = 2 is used to find the approximation for f(2.1), then the % erro

yKpoI14uk [10]

<u>Answer-</u>

The % error of this approximation is 1.64%

<u>Solution-</u>

Here,

$\Rightarrow f(x) = 2\cos x + e^{2x}$

$\Rightarrow f'(x) = -2\sin x + 2e^{2x}$

And,

$\Rightarrow f(2) = 2\cos 2 + e^{4}$

$\Rightarrow f'(2) = -2\sin 2 + 2e^{4}$

Taking (2, f(2)) as a point and slope as, f'(2), the function would be,

$\Rightarrow y-y_1=m(x-x_1)$

$\Rightarrow y-(2\cos 2 + e^{4})=(-2\sin 2 + 2e^{4})(x-2)$

$\Rightarrow y=(-2\sin 2 + 2e^{4})(x-2)+(2\cos 2 + e^{4})$

The value of f(2.1) will be

$\Rightarrow y=(-2\sin 2 + 2e^{4})(2.1-2)+(2\cos 2 + e^{4})$

$\Rightarrow y=(-2\sin 2 + 2e^{4})(0.1)+(2\cos 2 + e^{4})$

$\Rightarrow y=64.5946$

According to given function, f(2.1) will be,

$\Rightarrow f(2.1) = 2\cos 2.1 + e^{2(2.1)}$

$\Rightarrow f(2.1) = 65.6766$

$\therefore \%\ error=\dfrac{65.6766-64.5946}{65.6766}=0.0164=1.64\%$

5 0

3 years ago

In mathematics, a formula is a

jekas [21]

A way to help solve an equation or a series of equations

4 0

3 years ago

Read 2 more answers

An electrician cuts a 136 ft long piece of cable. One piece is 16 feet less than 3 times the length of the other piece. Find the

Romashka [77]

X + y = 136
x = 3y - 16

3y - 16 + y = 136
4y - 16 = 136
4y = 136 + 16
4y = 152
y = 152/4
y = 38

x = 3y - 16
x = 3(38) - 16
x = 114 - 16
x = 98

the larger piece (x) = 98 ft and the smaller piece (y) = 38 ft

8 0

2 years ago

Read 2 more answers

How do I solve these two?

Bas_tet [7]

Answer:

1.D

2.B

Step-by-step explanation:

For the first one divide see which one is less which is D

For the second one Ive always used the method kcf keep change flip so you keep $\frac{15}{1}$ the change ÷ to multiplication so then flip $\frac{2}{9}$ so the equation would be

$\frac{15}{1}$ x $\frac{9}{2}$ so multiply the 15 by 9 then you get 135 then divide by 2 so thats your answer

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2 years ago

At last Friday’s football game there were a total of 573 fans in attendance, including students and non-students. Let x represen

lbvjy [14]

Answer:

y=−x+573, x+y=573

Step-by-step explanation:

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3 years ago