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azamat
3 years ago
5

What is the value of this expression 32+50+(-50) HELP ME IM BEGGING YOUUUU

Mathematics
1 answer:
skad [1K]3 years ago
7 0
Answer:-
So if ur question merely includes addition and subtraction operations then it’s “32”
You might be interested in
How many applications of integration by parts are required to evaluate integral (x^7)(e^x) dx?
charle [14.2K]
If you're using the app, try seeing this answer through your browser:  brainly.com/question/2860229

_______________


Make it more general, and see what happens when you try to reduce the exponent of  x  in the following integral:

\mathsf{\mathtt{I}_0=\displaystyle\int\! x^k\cdot e^x\,dx\qquad\qquad (k\ge 1,~~k\in\mathbb{N})}


Now, integrate it by parts:

\begin{array}{lcl}
\mathsf{u=x^k}&\quad\Rightarrow\quad&\mathsf{du=k\cdot x^{k-1}\,dx}\\\\
\mathsf{dv=e^x\,dx}&\quad\Leftarrow\quad&\mathsf{v=e^x}
\end{array}


\mathsf{\displaystyle\int\! u\,dv=u\cdot v-\int\! v\,du}\\\\\\
\mathsf{\displaystyle\int\! x^k\cdot e^x\,dx=x^k\cdot e^x-\int\! e^x\cdot k\cdot x^{k-1}\,dx}\\\\\\
\mathsf{\displaystyle\int\! x^k\cdot e^x\,dx=x^k\cdot e^x-k\int\! x^{k-1}\cdot e^x\,dx}\\\\\\
\mathsf{\displaystyle\int\! x^k\cdot e^x\,dx=x^k\cdot e^x-k\cdot \mathtt{I}_1}

where \mathsf{\mathtt{I}_1=\displaystyle\int\! x^{k-1}\cdot e^x\,dx.}


So after one iteration, the exponent of  x  was decreased by one unit.

The question is:  after how many iterations will the exponent of  x  equals zero?

     After exactly  k  iterations, of course.

Therefore, for  k = 7, you have to apply integration by parts  7  times, to get rid of that polynomial factor. Then, there will be one last integral left to evaluate:

\mathsf{\displaystyle\int\! e^x\,dx}

But this one doesn't need to be evaluated by parts. You can directly write the result:

\mathsf{\displaystyle\int\! e^x\,dx=e^x+C}


Shortly, for the integral

\mathsf{\mathtt{I}_0=\displaystyle\int\! x^7\cdot e^x\,dx}

you have to apply integration by parts  7  times (not  8  times).


I hope this helps. =)


Tags:  <em>indefinite integral integration by parts reduction formula product polynomial exponential differential integral calculus</em>

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3 years ago
X=3/5 y=1/3 z=2 4/5 work out z+x*y
irinina [24]

Answer:

3

Step-by-step explanation:

7 0
3 years ago
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Carmen has 75% less money than Anna. How much money does Carmen have if Anna has 256?
Lady_Fox [76]

Answer:

$64

Step-by-step explanation:

6 0
2 years ago
the radius of wheel of a bicycle is 40 cm. taking pie =3.14, a)find tthe circumference of the wheel.b) find the distance covered
monitta

Answer:

a)=251.2 cm    b)=50240 cm

Step-by-step explanation:

a) The formula for calculating the circumference of a circle is c=d*pie, where D is the diameter of the circle.

Therefore, C = 2 * 40 * 3.14 = 251.2 cm

b) The distance covered by 200 revolutions of the wheel is 200 times the circumference, 200*251.2=50240 cm.So to think about this we can assume that there is a point A on the wheel, the distance that point A travels when it rotates 200 times.

6 0
3 years ago
Fill in the y-value for each box in the t-chart using the equation below !?
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