multiply by 1 or 1+4i/1+4i
(3+2i)(1+4i)/[(1-4i)(1+4i)]
=3+12i+2i-8/[1-4i+4i+16]
=-5/17+14i/17-you have to foil it but remember ixi=-1
so after foiling it you get 3x1=3
3x-4i=-12i
2ix1=2i
2ix-4i=-8x
The sun is about 1.5 • 10^11 m from earth. If the sun suddenly went out, about how many minutes would elapse before people on earth would know? (Hint: The speed of light is about 3 • 10^8 m/s.) Show y
INTEGRAL_C (x − y) ds, where C is the portion of y = x^3 from (1, 1) to (−1, −1)-The integral is along C, so x - y = x - x³
ds = √(1 + (dy/dx)²) = √(1 + 9x^4)
The line integral becomes
-1∫ (x - x³
so i think find the zeros means to find the roots right? so would i do the whole integral roots thereom thing then factor?i should end up with 3 roots right?-Yes, the zeros and roots are the same thin
Have you ever thought about dropping a coin (say a quarter) off of a huge skyscraper (lets say the Empire State Building)
What would be the speed of that coin travellig down the huge building, and t
y = √x , y = 1/4x , x=25
So with that information do I integrate with r espect to the y axis?
I know they intercept when x = 0 and 16
so what do I do with the x = 25? i dont understand that part
A. 1
B. 1.5
C. 2
D. 2.5
Please say or show how you got the answer :D-geometric series sum to a/(1-r) where a is the first term, and r is the ratio between terms. For this series you then get
(1/2)/(
z = -3 + 3i
= 3(-1 + i)
r = 3√(1+1) = 3√2
θ = tan^-1(1/(-1)) = 3Π/4 (since x is negative and y is positive, θ is in II quadrant)
z = 3√2 [cos(3Π/4) + isin(3Π/4)]
Here is the Directions...
Write the polynomial function of least degree with integral foefficients that has the given zeroes.
( or in other words as my teacher says for a simpler explanation, find th
We have 250 points possible and up until now Ive accumulated 144.5 points....next week is Finals so I have a chance to get another 60 points but what is my grade as of now with 144.5 points out of 250
Solve and graph the inequality.
-5x
Can you help solve
6x + 3 = x + 8
Solve the inequality.
-4w>12-1. x=4
2. x>-11 (you must switch sign if you divide by a negative)
3.x=1
4.w-Try this, its a super
1. The perimeter of a standard-sized rectangular rug is 32ft. The length is 2ft longer than the width. Find the dimensions.
What is the width?
What is the length?
2. A flower bed is in the shape of
Sorry to ask again, and this must be such a simple problem but I havent done this for a while. I think Im over analyzing it. I was going to take the u as 2x and not sure what the du would be..sinx?but
