Dado los números complejos Z= 10[cos(45) + i sen(45)] y W=5[cos(150) + i sen(15)] halla {/N...
Sin and Cos V15 13. Si sen(a) y está en el cuadrante III entonces sen 10 10 I. B. C.- 4 D. 4 4 14. cos(10")cos(59) + sen(10°)sen (5) = A) sen(5) B) cos(15) C) -cos(5) D) cos(59) 15. _1 + cot-(t) - csc (t) = A) 1 B) 4 C) 0 D) -1 16. 3 sen(x) + 2 sen(x + 2) = A) 5 sen(x) B) -5 sen(x) C) 5 sen(x) + 1 D) 5 sen(x) + 2
Given x(z) = (zˆ2+1)/(z-1/2) Find y(n) = x(2n).(1/2)ˆn and w(n) = cos(pi.n/2).x(n)
Question 1 Find the current i in the circuit S k32 M 15 k21 W 10 cos 40,000 V 5 nF + 0.5 H 2 cos(40000t -98.1°) mA 0.7 cos(40000t + 45°) mA 7 cos(40000t - 45°) 1.8 cos(40000t + 12.5°) mA 2 cos(40000t +98.1°) mA 5 cos(40000t + 43.1°) mA
For three sequences X[n],y[n],z[n], assume that Y(w)= X(-w) and (w)= X(w + TT) in the Fourier domain. In the z-domain, what are Y(z) and Z(z), respectively? A. X(-2) and - X(z) B. X(- z) and X(2-1) c. -X(z) and X(2-1) D. -X(z) and X(-2) E. X(z-) and X(-2) F. X(z-1) and - X(z) G. None of the above.
Los Angeles, CA 34° 00' N 118° 15' W Elev. 29 m Av.T (C): 18 Ann. P (cm): 32.7 70 cm C 40T 30 40 10 -20 -10 J FMAMJJASOND Figure 14-17. Los Angeles climograph. Phoenix, AZ 33 26'N 112 01' W Elev. 300 m Av.T (°C): 22.5 Ann. P (cm): 19.6 70 cm C 40T 30 20 10 60 -50 -40 30 -20 10 0- -10 -20- J FMAMJJASOND Figure 14-18. Phoenix dimograph Compare the two stations on the...
Z - Find zw and Leave your answers in polar form. w z= 10( cos 110° + i sin 110°) w=3( cos 240° + i sin 240°) What is the product? [coslº+ i sin(_lº] (Simplify your answers. Type any angle measures in degrees. Use ang
Using Matlab: If x(n) = cos(5π e-n/10) over n=[-10:30] and y(m)=sin(0.03πem/20) over m=[0:40], find z = x*y and its support vector k. Here * means convolution. Stem plot the results setting the axes using the command axis([-20,80,-2. .5,2.5]).
- 2 (3) (a) (7 points) Let w = I = + +7, y = cos(2), z = 4t. Use the Chain Rule to express or in terms of t. Then evaluate du at t= . (b) (7 points) Let w = 2+2y-42 es cos(3t), y e28sin(3t) and 2 = = 22 2r-y+3z) Use the Chain Rule to express and in terms of s and t. = 2 = ow os 8 åt
5] (2) GIVEN: a> 0,0# {(x, y, z) z a"-x'-y") W is the solid region of R' that is below 2 and above the xy- plane. W has constant density,8 and the mass of W is M, m(W) M FIND: The moment of inertia, I, of W with respect to the z- axis, express 2 I in terms of M and a without 8
5) (1pt) Assume x(t) with Fourier Transform X(w) shown below (where 1X(15)1-3 and 1X(4511e1). Assume x(t) is the input to a system with |H(w)| shown below. Let yt) be the output of the system and Y(w) be its Fourier Transform. Sketch IYwll. Make sure to mark the most significant points in the graph for full credit IX(w) IY(w) -60 0 60 w IH(w)l 45 -15 0 15 45 X,(w) X,(w) ?6) (1pt) Assume two signals x1(t) and x2(t) have Fourier...