Sequences and series 14. Find the limit, if it exists, for each of the following sequences...
1. For each of the following sequences, determine whether it converges. If so, find the limit. 2n+1 5n-2 a. b. 4. =(-1)"." 2n 2"-1 c. n
3. For each of the following discrete-time sequences: (i) Find the Z-transform (ZT), if it exists, and plot the region of convergence (ROC) in the Z-plane (ii) Find the poles and zeros and plot them in the 2-plane (iii) Determine whether the DTFT of the sequence exists (a) x[n] = 8[n – 1] + 28[n – 3] (b) [n] = (0.9e-j*)" u[n + 2] – 2-ul-n - 1] (c) x[n] = 2-" un + 1]
number 4
1. Find the limit of the following sequences (find lim an) n n a.) an = n +3 b.) an = V35n n- 2. Determine whether the following series converge or diverge. -3 (n + 2)n + 5 b.) tan-'(n) n2 + 1 a.) 5 nel 3. Determine the radius of convergence and the interval of convergence of the series 2" (x – 3)" n n=1 n=0 (-1)", 2n 4. Using the power series cos(x) (2n)! (-« <...
number 4 as clearly as possible
1. Find the limit of the following sequences (find lim an) n n a.) an = n +3 b.) an = V35n n- 2. Determine whether the following series converge or diverge. -3 (n + 2)n + 5 b.) tan-'(n) n2 + 1 a.) 5 nel 3. Determine the radius of convergence and the interval of convergence of the series 2" (x – 3)" n n=1 n=0 (-1)", 2n 4. Using the power series...
For each of the following sequences, find the limit of the sequence and then say whether the sequence converges or diverges. Show your work (1) {an} = {()" - 5} (2) {an} = {In (2 - 5)}
Determine whether the following sequences converge, and find the limit of those that converge a) (1+i)n b) 1/n[(1+i)n)] c) 1/n![(1+i)n)] d) 1/(1+i)n e) n/(1+i)n f) n!/(1+i)n
which of the following sequences that the Fourier transform exists$I x(n) = [(1/2)^{n} + 1]u(n) $
7. (25) Solve the following problems. (a) Find the limit (b) Find the interval of convergence of the following power series 0O TL Tl n-1 (c) Find the sum of the following power series and determine the largest set on which your formula is valid n= 1 (d) Let f(x) = cosa. Find T6(2), the Taylor polynomial of f at zo = 0 with degree 6 (e) Calculate the Maclaurin series for the following functio f(x) = In
7. (25)...
152 Chapter 7. Series 7.1 Investigating Series In this activity, you will experiment with some infinite sequences and their limits. Starting with a given sequence of numbers, {bi, b2. . . .], you will construct a new sequence {ai, a2. . . .} as follows: an b-b-1 Problems Repeat the activity, this time starting with the following sequence as (bn: 2 1 2 3 6 9 12 15 18 21 4 68' 10 12 14' 16 4. Compute the limit...
PROBLEM 5: Choose two of the following three sequences, and calculate their limit. If they are divergent, explain why. (a) an = n sinn, for n 2 1 (b) qn = n in (^+-), for n 21 (c) an = Inn - In(e" +1), for n > 1