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3 years ago

I need this please it’s due today and i don’t understand it

Mathematics

1 answer:

Hitman42 [59]3 years ago

8 0

Answer:

i belive it is 1,1

Step-by-step explanation:

the crossing points of the lines 1 and 2

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Solve the given initial-value problem. the de is of the form dy dx = f(ax + by + c), which is given in (5) of section 2.5. dy dx

shutvik [7]

$\dfrac{\mathrm dy}{\mathrm dx}=\cos(x+y)$

Let $v=x+y$ , so that $\dfrac{\mathrm dv}{\mathrm dx}-1=\dfrac{\mathrm dy}{\mathrm dx}$ :

$\dfrac{\mathrm dv}{\mathrm dx}=\cos v+1$

Now the ODE is separable, and we have

$\dfrac{\mathrm dv}{1+\cos v}=\mathrm dx$

Integrating both sides gives

$\displaystyle\int\frac{\mathrm dv}{1+\cos v}=\int\mathrm dx$

For the integral on the left, rewrite the integrand as

$\dfrac1{1+\cos v}\cdot\dfrac{1-\cos v}{1-\cos v}=\dfrac{1-\cos v}{1-\cos^2v}=\csc^2v-\csc v\cot v$

Then

$\displaystyle\int\frac{\mathrm dv}{1+\cos v}=-\cot v+\csc v+C$

and so

$\csc v-\cot v=x+C$

$\csc(x+y)-\cot(x+y)=x+C$

Given that $y(0)=\dfrac\pi2$ , we find

$\csc\left(0+\dfrac\pi2\right)-\cot\left(0+\dfrac\pi2\right)=0+C\implies C=1$

so that the particular solution to this IVP is

$\csc(x+y)-\cot(x+y)=x+1$

5 0

3 years ago

Find the sales tax for three cds if each cd is $14.29 and the sales tax is 7.25%

mestny [16]

14.29 * .0725 = 1.04
1.04 * 3 = 3.12

8 0

4 years ago

Read 2 more answers

How many minutes are in m hours?

notka56 [123]

Answer:

the 2nd one (60m minutes)

Step-by-step explanation:

60 minutes in an hour, so if m is the number of hours you would times that by the number of minutes in an hour which is sixty. 60m is 60 times m

8 0

3 years ago

On Monday, a security guard spent 4.5 hours on patrol and 2 hours on surveillance. On Tuesday, the officer spent 1 hour and 40 m

Sever21 [200]

Tuesday is a bigger ratio.

4 0

3 years ago

Find a , x , y with solution

tatiyna

25+80=105
180-105=75=a

y=90 because it’s a right triangle so

25+90=115
180-115=65=x

y=90
x=65
a=75

6 0

3 years ago