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2 years ago

Which expression is equivalent 07x+y 0 7x-y

Mathematics

1 answer:

cestrela7 [59]2 years ago

3 0

Answer:

Dnndk

Step-by-step explanation:

Rmdm number 2

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3) (7,5), (9,-4) A) (-1, 4.5) G) (6, 2.5) B) (11.-13) D) (8,0.5)

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Step-by-step explanation: 474747-4747474-

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3 years ago

A parallelogram-shaped field in a park needs sod. The parallelogram has a base of 21.5 meters and a height of 18 meters. The sod

Elanso [62]

Answer: C

Step-by-step explanation:

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2 years ago

Read 2 more answers

In problem solve the given differential equation by underdetermined coefficients y''-2y+y=xe^x

Alexus [3.1K]

Answer:

Solution is $y(t)=C_1e^x+C_2xe^x+\frac{x^3e^x}{6}$

Step-by-step explanation:

Given Differential Equation,

$y"-2y'+y=xe^x$ ...............(1)

We need to solve the given differential equations using undetermined coefficients.

Let the solution of the given differential equation is made up of two parts. one complimentary solution and one is particular solution.

$\implies\:y(x)=y_c(x)+y_p(x)$

For Complimentary solution,

Auxiliary equation is as follows

m² - 2m + 1 = 0

( m - 1 )² = 0

m = 1 , 1

So,

$y_c(x)=C_1e^x+c_2xe^x$

Now for particular solution,

let $y_p(x)=Ax^3e^x$

$y'=Ax^3e^x+3Ax^2e^x$

$y"=Ax^3e^x+6Ax^2e^x+6Axe^x$

Now putting these values in (1), we get

$Ax^3e^x+6Ae^2e^x+6Axe^x-2(Ax^3e^x+3Ax^2e^x)+Ax^3e^x=xe^x$

$Ax^3e^x+6Ae^2e^x+6Axe^x-2Ax^3e^x-6Ax^2e^x+Ax^3e^x=xe^x$

$6Axe^x=xe^x$

$6A=1$

$A=\frac{1}{6}$

$\implies\:y_p(x)=\frac{x^3e^x}{6}$

Therefore, Solution is $y(t)=C_1e^x+C_2xe^x+\frac{x^3e^x}{6}$

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3 years ago

48 cm3, 75g??????????????????

BaLLatris [955]

Answer:

no the answer would be 48g (i think)

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3 years ago

Solve 7x – 5x – 3 = x + 4. A. x = 7 B. x = –10 C. x = 6 D. x = –8

enot [183]

A. x=7 is the Answer!

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3 years ago