Answer:
Pretty sure its (D). Yes, half of the residuals are positive and half are negative.
Yes, I am verifying my own answers for people who don't like to be trolled.
A is wrong, I put it in wrong the first time. D also makes sense now that I look at it more. I got an 88%
ED2021
Answer:
24
Step-by-step explanation:
Answer:
C
Step-by-step explanation
This is very simple, 660/10
Answer:
θ = π n + π/2 for n element Z
Step-by-step explanation:
Solve for θ:
1 + 2 cos(2 θ) + cos^2(2 θ) = 0
Write the left hand side as a square:
(cos(2 θ) + 1)^2 = 0
Take the square root of both sides:
cos(2 θ) + 1 = 0
Subtract 1 from both sides:
cos(2 θ) = -1
Take the inverse cosine of both sides:
2 θ = 2 π n + π for n element Z
Divide both sides by 2:
Answer: θ = π n + π/2 for n element Z
Answer:
The general solution is
Step-by-step explanation:
Given differential equation is
y''-4y'+4y=0
and 
To find the 
we are applying the following formula,
The general form of equation is
y''+P(x)y'+Q(x)y=0
Comparing the general form of the differential equation to the given differential equation,
So, P(x)= - 4
The general solution is
