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:
81
Step-by-step explanation:
Answer:
can u zoom in and take picture
Step-by-step explanation:
Answer:
1) x-3=0
4) 6=2x
6) x²=9
Step-by-step explanation:
x-3=0
x=3
----
1+x = 2
x = 2-1
x = 1
----
9-x=3
9-3=x
6=x
----
6=2x
6/2=x
3=x
----
x/5=3
x=3*5
x=15
----
x²=9
x=±3
These are the value of x solved for each equations. If you have any questions, feel free to ask.