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2 years ago

Pio;uyltkjdthsgfxhcvjbk.nl

Mathematics

2 answers:

ruslelena [56]2 years ago

6 0

Answer :pio;uyltkjdthsgfxhcvjbk.nl

iuifyjgchvjblgkufyjdhgxfbv nm,jkghgbv nmbjgkuf,jhcmvjgU"Fy;dlc.v/H

g'f;c.xcv/bhg'fh;cj.

Step-by-step explanation:

bekas [8.4K]2 years ago

4 0

Answer:

vbgfdcvbnmkkhgfcv bnm,l

Step-by-step explanation:

Elo by the way :D

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Determine whether y = -2x² - 3 is a function.

Alexus [3.1K]

Answer:yes

Step-by-step explanation:

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1 year ago

A parent increases a child’s monthly allowance by 20% each year. If the allowance is $8 per month now, in about how many years w

Mazyrski [523]

6 years

A parent increases a child’s monthly allowance by 20% each year. If the allowance is $8 per month now. This is an exponential function, An exponential function is given by:

Let x be the number of years and y be the allowance. The initial allowance is $8, this means at x = 0, y = 8

Since it increases by 20% each year, i.e 100% + 20% = 1 + 0.2 = 1.2. This means that b = 1.2
Therefore:

To find the number of years will it take to reach $20 per month, we substitute y = 20 and find x

x = 6 years to the nearest year

8 0

2 years ago

Find a linear second-order differential equation f(x, y, y', y'') = 0 for which y = c1x + c2x3 is a two-parameter family of solu

Alisiya [41]

Let $y=C_1x+C_2x^3=C_1y_1+C_2y_2$ . Then $y_1$ and $y_2$ are two fundamental, linearly independent solution that satisfy

$f(x,y_1,{y_1}',{y_1}'')=0$
$f(x,y_2,{y_2}',{y_2}'')=0$

Note that ${y_1}'=1$ , so that $x{y_1}'-y_1=0$ . Adding $y''$ doesn't change this, since ${y_1}''=0$ .

So if we suppose

$f(x,y,y',y'')=y''+xy'-y=0$

then substituting $y=y_2$ would give

$6x+x(3x^2)-x^3=6x+2x^3\neq0$

To make sure everything cancels out, multiply the second degree term by $-\dfrac{x^2}3$ , so that

$f(x,y,y',y'')=-\dfrac{x^2}3y''+xy'-y$

Then if $y=y_1+y_2$ , we get

$-\dfrac{x^2}3(0+6x)+x(1+3x^2)-(x+x^3)=-2x^3+x+3x^3-x-x^3=0$

as desired. So one possible ODE would be

$-\dfrac{x^2}3y''+xy'-y=0\iff x^2y''-3xy'+3y=0$

(See "Euler-Cauchy equation" for more info)

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3 years ago

How you solve<br> -9+[b-8]=-5

sertanlavr [38]

your answer is B= 12 your welcome :)

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3 years ago

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zheka24 [161]

Answer:

Step-by-step explanation:

I do not know what you were asking for

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2 years ago