Answer:
a) n<1 and n>5
b) 0 < n < -4
c) n > 2 and n < -2
Step-by-step explanation:
The signal is given by x[n] = 0 for n < -1 and n > 3
The problem asks us to determine the values of n for which it's guaranteed to be zero.
a) x[n-2]
We know that n -2 must be less than -1 or greater than 3.
Therefore we're going to write down our inequalities and solve for n
Therefore for n<1 and n>5 x [n-2] will be zero
b) x [n+ 3]
Similarly, n + 3 must be less than -1 or greater than 3
Therefore for n< -4 and n>0, in other words, for 0 < n < -4 x[n-2] will be zero
c)x [-n + 1]
Similarly, -n+1 must be less than -1 or greater than 3
Therefore, for n > 2 and n < -2 x[-n+1] will be zero
Answer:
1 hour
Step-by-step explanation:
it depends on speed of light
Step-by-step explanation:
The number in one set is 48 . The number in the second set is 6 .
48 ÷ 6 = 8
Sylvia lives 8 times as far from the school as Jessica. If you multiply the distance away that Jessica lives by your answer, you should get Sylvia's distance from the school. Is your answer reasonable?
see the image to better understand the problem
we have that
sin(15)=6800/L -------> by opposite side divided by the hypotenuse
solve for L
L=6800/sin(15)
<h2>L=26,273 ft</h2>