(x^2 - 4) (x - 1)
(x2 + x + 2) • (x - 2)
—————————
x - 1
x-1 is the answer!!!!! :)
b. Calculate the arithmetic mean. (Round your answer decimal places.)
c. Calculate the variance. (Round your answer to 2 decimal places.)
Answer:
a.) range- 6.2
b.) arithmetic mean- 13.85
c.) varience- 0.69
The line integral is
We have
so the integral reduces to
The line integral ∫C ysin(z) ds over the circular helix C, parametrized by x = cos(t), y = sin(t), z = t for 0 ≤ t ≤ 2π, evaluates to π√2.
To evaluate the line integral ∫C ysin(z) ds over the circular helix C given by x = cos(t), y = sin(t), z = t for 0 ≤ t ≤ 2π, we follow these steps:
1. Parameterize the curve: C is already parameterized as x = cos(t), y = sin(t), z = t.
2. Find the differential ds: ds = √(dx² + dy² + dz²) = √(sin²(t) + cos²(t) + 1)dt = √(1 + 1)dt = √2 dt.
3. Evaluate the integral: ∫C ysin(z) ds = ∫[0, 2π] sin(t) * sin(t) * √2 dt = ∫[0, 2π] sin²(t) * √2 dt.
Now, we'll integrate sin²(t) * √2 with respect to t:
∫ sin²(t) * √2 dt = (1/2) * ∫ (1 - cos(2t)) * √2 dt.
Using the power rule for integration, we get:
(1/2) * [(t - (1/2) * sin(2t)) * √2] | [0, 2π].
Plugging in the limits:
(1/2) * [(2π - (1/2) * sin(4π) - (0 - (1/2) * sin(0))) * √2].
Since sin(4π) = sin(0) = 0:
(1/2) * [(2π - 0 - 0) * √2] = π√2.
So, ∫C ysin(z) ds = π√2.
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Answer:
left bottem
Step-by-step explanation:
Answer:
The 2nd one is correct
Step-by-step explanation:
Answer:
Harry is 2, Jim is 6
Step-by-step explanation:
The first statement tells us they are 4 years part. Then you need to find two numbers that are 4 apart and that has one that is half the other, like 4 and 8. Finally, subtract two because this will happen in two years and you need their ages now.
Sorry if this was confusing.