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Alona [7]
3 years ago
13

How do you do this question?

Mathematics
1 answer:
Alla [95]3 years ago
8 0

Step-by-step explanation:

∫ erf(x) dx

Integrate by parts.

If u = erf(x), then du = 2/√π e^(-x²) dx.

If dv = dx, then v = x.

∫ u dv = uv − ∫ v du

= x erf(x) − ∫ 2/√π x e^(-x²) dx

= x erf(x) + 1/√π ∫ -2x e^(-x²) dx

Substitution.

If u = -x², then du = -2x dx.

= x erf(x) + 1/√π ∫ e^u du

= x erf(x) + 1/√π e^u + C

= x erf(x) + 1/√π e^(-x²) + C

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If a whole pizza has 2400 calories how many calories would you eat if you ate 5/6 of the pizza?
Darina [25.2K]

Answer:

2000 calories

Step-by-step explanation:

2400 / 6 = 400 calories per 1/6 of pizza

400 * 5 = 2000

5 0
3 years ago
Since Neil Armstrong was the first person to walk on the. moon, the contrapositive is
Romashka-Z-Leto [24]

Answer:

If nobody walked on the moon, then Neil Armstrong didn't

Step-by-step explanation:

The contrapositive flips the sign of "Neil Armstrong"  and the "moon," and also switches their position, so you will switch the hypothesis and conclusion as well

7 0
3 years ago
The midpoint of JK is point L at (–1, 8). One endpoint is J(4, –15). Which equations can be solved to determine the coordinates
ycow [4]
Given two endpoints: (x_1,\ y_1) and (x_2,\ y_2), the midpoint of the two endpoints (x_m,\ y_m) is given by
(x_m,\ y_m)=\left( \frac{x_1+x_2}{2} ,\  \frac{y_1+y_2}{2}\right)

Thus, given the midpoint L(-1, 8) and one endpoint J(4, -15). The second endpont is given by
(-1,\ 8)=\left( \frac{x_1+4}{2} ,\ \frac{y_1+(-15)}{2}\right)
i.e.
\frac{x_1+4}{2} =-1 \\  \\ x_1+4=-2 \\  \\ x_1=-2-4=-6
and
\frac{y_1+(-15)}{2}=8 \\  \\ y_1-15=16 \\  \\ y_1=16+15=31
6 0
3 years ago
Read 2 more answers
You are planning to build a rectangular vegetable garden with a perimeter of 42 m. the length is twice the width. find the dimen
Mrac [35]

Length - 14 meters

Width - 7 meters


The length is twice the width - 7 times 2 = 14


There are four sides, two 14m and two 7m. 14 x 2 + 7 x 2 = 42

8 0
3 years ago
How do I solve this?
vladimir1956 [14]

Answer:

3p³ + 2p² – 3p – 11

Step-by-step explanation:

From the question given above, the following data were obtained:

Side 1 (S₁) = –1(p + 5)

Side 2 (S₂) = 2(p² – 3)

Side 3 (S₃) = 3p³ – 2p

Perimeter (P) =?

The perimeter of the triangle can be obtained as follow

P = S₁ + S₂ + S₃

P = –1(p + 5) + 2(p² – 3) + 3p³ – 2p

Clear bracket

P = –p – 5 + 2p² – 6 + 3p³ – 2p

Rearrange

P = 3p³ + 2p² – 2p – p – 6 – 5

P = 3p³ + 2p² – 3p – 11

Therefore, the perimeter of the triangle is 3p³ + 2p² – 3p – 11

4 0
3 years ago
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