Answer:
a is the answer.
Step-by-step explanation:
Answer:
X^2
Step-by-step explanation:
Call this piece of the plane S. Parameterize S by the vector function
s(u, v) = u i + v j + (28 - 2u - 3v)/4 k
with 1 ≤ u ≤ 4 and 2 ≤ v ≤ 6. Take the normal vector to S to be
∂s/∂u x ∂s/∂v = 1/2 i + 3/4 j + k
which has norm √((1/2)^2 + (3/4)^2 + 1^2) = √29/4
The area of S is then
The picture is kind of grainy but it looks like:
4u = 56
Add 4's to both sides:
4u/4 = 56/4
cross out both 4's on left side and divide on the right:
u = 14