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3 years ago

Solve the question in the attached image.

Mathematics

1 answer:

Greeley [361]3 years ago

3 0

9514 1404 393

Answer:

1) 2/7√((x+3)^7) +C

2) 2√(x+5) +C

Step-by-step explanation:

The power rule applies.

∫u^n du = u^(n+1)/(n+1)

$\displaystyle\int{(x+3)^\frac{5}{2}}\,dx=\boxed{\dfrac{2}{7}(x+3)^\frac{7}{2}+C}$

$\displaystyle\int{(x+5)^{-\frac{1}{2}}}\,dx=\boxed{2(x+5)^\frac{1}{2}+C}$

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Calculus 2 Master needed, show steps with partial fraction decomposition <img src="https://tex.z-dn.net/?f=%5Cint%283x%5E2-26x%2

Vladimir79 [104]

Answer:

-ln|x−5| + 2 ln(x²+4) + 3 tan⁻¹(x/2) + C

Step-by-step explanation:

The fraction will be split into a sum of two other fractions.

The first fraction will have a denominator of x − 5. The numerator will the a polynomial of one less order, in this case, a constant A.

The second fraction will have a denominator of x² + 4. The numerator will be Bx + C.

$\frac{3x^{2}-26x+26}{(x-5)(x^{2}+4)}=\frac{A}{x-5} +\frac{Bx+C}{x^{2}+4}$

Combine the two fractions back into one using the common denominator.

$\frac{A}{x-5} +\frac{Bx+C}{x^{2}+4}=\frac{A(x^{2}+4)+(Bx+C)(x-5)}{(x-5)(x^{2}+4)}$

This numerator will equal the original numerator.

$A(x^{2}+4)+(Bx+C)(x-5)=3x^{2}-26x+26\\Ax^{2}+4A+Bx^{2}-5Bx+Cx-5C=3x^{2}-26x+26\\(A+B)x^{2}+(C-5B)x+(4A-5C)=3x^{2}-26x+26$

Match the coefficients.

$A+B=3\\C-5B=-26\\4A-5C=26$

Solve the system of equations.

$A=-1\\B=4\\C=-6$

So we can rewrite the integral as:

$\int {(\frac{-1}{x-5}+\frac{4x-6}{x^{2}+4}) } \, dx$

Solving:

$\int {\frac{-1}{x-5}\, dx + \int {\frac{4x}{x^{2}+4}} \, dx - \int {\frac{6}{x^{2}+4} } \, dx$

$-\int {\frac{1}{x-5}\, dx + 2\int {\frac{2x}{x^{2}+4}} \, dx - 6\int {\frac{1}{x^{2}+4} } \, dx$

$-ln|x-5| + 2ln(x^{2}+4) - 6(\frac{1}{2} tan^{-1}(\frac{x}{2} )) + C$

$-ln|x-5| + 2ln(x^{2}+4) - 3 tan^{-1}(\frac{x}{2} ) + C$

5 0

3 years ago

9(5x) need help asap

dexar [7]

Answer:

45x happy to help ya :)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Mon wants to make 5 lbs of sugar syrup. How much sugar does he need to make 5% syrup

dezoksy [38]

she needs 1 lb of sugar

4 0

3 years ago

What is blank plus 1/2 to equal 4

sweet-ann [11.9K]

Answer:

either 3 1/2 or 7/2

Step-by-step explanation:

4 is equal to 8/2

8/2 minus 1/2 is 7/2

7/2 can be simplified to be 3 1/2

8 0

3 years ago

Can somebody help me with this question please

harina [27]

Answer:

Step-by-step explanation:

Points B,C,D, and E are points on the edge of the circle.

$\angle BCD$ and $\angle BED$ are in the same segment.

We have that: $\angle BCD=34\degree$

We want find $m\angle BED$

Recall that angles in the same segment are congruent.

$\therefore \angle BED=\angle BCD=34$

So the answer is 34

3 0

3 years ago

Solve the question in the attached image.​

Solve the question in the attached image.