Answer:
ur mom
Step-by-step explanation:
First, we have to convert our function (of x) into a function of y (we revolve the curve around the y-axis). So:
And the derivative of x:
Now, we can calculate the area of the surface:
We could calculate this integral (not very hard, but long), or use
(1),
(2) and
(3) to get:
Calculate indefinite integral:
And the area:
Answer D.
Answer:
2
Step-by-step explanation:
Since you're only looking at salt and you want 4 times as much all you need to do is multiply 1/2 with 4 and the result is 2.
so you for sure cross off the 1st and 3rd problem off and if you choose the last one your answer would be in th left side of the y axis so it the 2nd answer
a. Substitute the given solutions and their derivatives into the ODE.
Both solutions satisfy the ODE.
b. The Wronskian determinant is
so the solutions are indeed independent.
c. The ODE has general solution . Then with the given initial conditions, the constants satisfy
So the ODE has the particular solution,