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2 years ago

What does mx+b means

Mathematics

2 answers:

jek_recluse [69]2 years ago

4 0

Place holders for numbers

wlad13 [49]2 years ago

4 0

Answer:

My X plus ME ;)

Step-by-step explanation:

fr fr

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Sin(x2 y2 da r , where r is the region in the first quadrant between the circles with center the origin and radii 1 and 5

Rudik [331]

I assume there's a plus sign missing above...

Convert to polar coordinates, using

$\begin{cases}x(r,\theta)=r\cos\theta\\y(r,\theta)=r\sin\theta\end{cases}$

Then the Jacobian is

$\dfrac{\partial(x,y)}{\partial(r,\theta)}=\begin{vmatrix}x_r&y_r\\x_\theta&y_\theta\end{vmatrix}=\begin{vmatrix}\cos\theta&\sin\theta\\r\sin\theta&-r\cos\theta\end{vmatrix}=-r$

Then

$\mathrm dA=\mathrm dx\,\mathrm dy=|-r|\,\mathrm dr\,\mathrm d\theta=r\,\mathrm dr\,\mathrm d\theta$

so the integral can be written as

$\displaystyle\iint_R\sin(x^2+y^2)\,\mathrm dA=\int_0^{\pi/2}\int_1^5r\sin(r^2)\,\mathrm dr\,\mathrm d\theta$

Let $s=r^2$ , so that $\dfrac{\mathrm ds}2=r\,\mathrm dr$ .

$\displaystyle\frac12\int_0^{\pi/2}\int_1^{25}\sin s\,\mathrm ds\,\mathrm d\theta=-\frac12(\cos25-\cos1)\int_0^{\pi/2}\mathrm d\theta=\frac\pi4(\cos1-\cos25)$

3 0

2 years ago

Evaluate (x + y)^0 for x = -3 and y = 5. 0 -1/2 2 1

ss7ja [257]

Answer:

The answer for this equation would be 1

Step-by-step explanation:

Hope I helped!

5 0

3 years ago

Read 2 more answers

Question 8

mina [271]

The percent is 85.71% so the rounded answer would be be 86%

3 0

2 years ago

Read 2 more answers

Can somebody tell me the answer for these two questions or just the top one please

stepladder [879]

Answer:

V = 268.08 in^3

Step-by-step explanation:

that answer was for the first question. I do not know the second one I'm very sorry

6 0

2 years ago

Which of the following equations has one real solution?

erastovalidia [21]

Answer:

4x2−12x+9=0

Step-by-step explanation:

The equation, 2x2+x+3=0, does not have a solution

The equation, x2+5x−3=0, equals -5/2+1/2√37 and -5/2+-1/2√37

The equation, x2−5x+4=0, equal 1 and 4

The equation, 4x2−12x+9=0, equals only 3/2

Hope this Helps

4 0

2 years ago