8k-4k+4+7-k =
8k-4k-k+4+7 =
3k+11
The answer is : x= -y/3+2
Find how many weeks are in a year and times by 5.15
13:48. this is because the number of cars with a sunroof is 13 to the total number of cars which is 48
First: the homogeneous solutions: the characteristic equation is4r^2 - 4r - 3 = 0which has roots r = 3/2, -1/2 hence the homogeneous solution isy = c1.exp(-x/2) + c2.exp(3x/2)
next you need the general form for the guess for yp and that isyp = A1cos(2x) + A2sin(2x)
Now substitute that into the equation and solve for A1, A2.
