3 years ago

2. Evaluate the expression by substituting the given value(s):

Mathematics

1 answer:

lawyer [7]3 years ago

7 0

Answer:

is you answers because i did the math so u dont have to ;)

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Mariulka [41]

Answer:

396

Step-by-step explanation:

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Given: y" - 2y' = 6t + 5e^2t. Find the correct form to use for y_p if the equation is solved using Undetermined coefficients. Do

const2013 [10]

Answer:

$y_p=A+Bt+Ce^{2t}$

Step-by-step explanation:

Given: $y'' - 2y' = 6t + 5e^{2t}$ .

we need to find the correct form for $y_p$ if the equation is solve using undetermined coefficients.

A first order differential equation $\frac{\mathrm{d} y}{\mathrm{d} x}=f\left ( x,y \right )$ is said to be homogeneous if $f(tx,ty)=f(x,y)$ for all t.

Consider homogeneous equation $y''-2y'=0$

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We get $(r^2-2r)e^{rt}=0$

Since $e^{rt}\neq 0$ , $r^2-2r=0$ .

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As constant term and $e^{2t}$ are already in the R.H.S of equation

$y" - 2y' = 6t + 5e^{2t}$ , we can take $y_p$ as $y_p=A+Bt+Ce^{2t}$

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Suppose z is proportional to the square root of x. If z = 717 when x = 9, find the proportionality constant k.??

Dahasolnce [82]

Answer:

239

Step-by-step explanation:

Write the equation. Fill in the given values, and solve for the unknown,

z = k√x

717 = k√9

k = 717/3 = 239

The constant of proportionality is 239.

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I do not know the answer but i need to answer a question in order to ask one,sorry,hope u understand:/

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Step-by-step explanation:

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