Taller de repaso Tercer Corte

Taller de repaso Tercer Corte

Professional Development

16 Qs

quiz-placeholder

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Taller de repaso Tercer Corte

Taller de repaso Tercer Corte

Assessment

Quiz

Mathematics

Professional Development

Practice Problem

Hard

Created by

Fabian Muñoz

Used 7+ times

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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La FFT de los números:
  {1i,2+2i,3+i,4}\ \left\{1-i,2+2i,3+i,4\right\} 
corresponde a: 

 {10+2i,0,22i,4+4i}\left\{10+2i,0,-2-2i,4+4i\right\}  

 {10+4i,22i,6i,4}\left\{10+4i,-2-2i,-6i,-4\right\}  

 {10+2i,0,22i,44i}\left\{10+2i,0,-2-2i,-4-4i\right\}  

 {10+4i,2+2i,6i,4}\left\{10+4i,2+2i,-6i,4\right\}  

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La FFT de los números:
 {1,2,3,4}\left\{1,-2,3,-4\right\} 
Corresponde a: 

 {2,22i,10,2+2i}\left\{2,-2-2i,10,-2+2i\right\}  

 {2,2+2i,10,22i}\left\{-2,2+2i,10,-2-2i\right\}  

 {2,22i,10,22i}\left\{2,-2-2i,10,-2-2i\right\}  

 {2,22i,10,2+2i}\left\{-2,-2-2i,10,-2+2i\right\}  

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

En la transformada discreta de Fourier para los valores complejos  {1/2,5/4i/2,1,1/4+i/4}\left\{1/2,5/4-i/2,-1,1/4+i/4\right\} , la magnitud más grande que alcanza el espectro de amplitud corresponde:

 954\frac{\sqrt{95}}{4}  

 964\frac{\sqrt{96}}{4}  

 974\frac{\sqrt{97}}{4}  

 984\frac{\sqrt{98}}{4}  

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La transformada zeta de la sucesión 23nu[n3]\frac{2}{3^n}u\left[n-3\right] corresponde a: 

 2z327z9\frac{2z^3}{27z-9}  

 2z427z9\frac{2z^4}{27z-9}  

 227z39z2\frac{2}{27z^3-9z^2}  

 227z49z3\frac{2}{27z^4-9z^3}  

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La transformada zeta de la función discreta: δ(n+3)5δ(n+1)+12nu[n]\delta\left(n+3\right)-5\delta\left(n+1\right)+\frac{1}{2^n}u\left[-n\right] 
corresponde a: 

 2z411z3+5z212z1\frac{2z^4-11z^3+5z^2-1}{2z-1}  

 2z411z3+5z2+12z1\frac{2z^4-11z^3+5z^2+1}{2z-1}  

 2z4+11z3+5z212z1\frac{2z^4+11z^3+5z^2-1}{2z-1}  

 2z4+11z3+5z2+12z1\frac{2z^4+11z^3+5z^2+1}{2z-1}  

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La transformada zeta de la función discreta: x[n]=cos(π2n)u[n1]x\left[n\right]=\cos\left(\frac{\pi}{2}n\right)u\left[n-1\right] 
corresponde a:

 1z2+1\frac{1}{z^2+1}  

 1z2+1\frac{-1}{z^2+1}  

 11z2\frac{1}{1-z^2}  

 1z21\frac{1}{z^2-1}  

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

La transformada zeta inversa de la función:
 X(z)=12z+6z2+z6X\left(z\right)=\frac{12z+6}{z^2+z-6} 
sobre la región compleja z>3\left|z\right|>3 , en términos de funciones discretas, corresponde a: 

 (3(2)n2(3)n)u(n)δ(n)\left(3\left(2\right)^n-2\left(-3\right)^n\right)u\left(n\right)-\delta\left(n\right)  

 (3(2)n+2(3)n)u(n)δ(n)\left(3\left(2\right)^n+2\left(-3\right)^n\right)u\left(n\right)-\delta\left(n\right)  

 (32n+2(3)n)u(n)δ(n)\left(\frac{3}{2^n}+\frac{2}{\left(-3\right)^n}\right)u\left(n\right)-\delta\left(n\right)  

 (32n2(3)n)u(n)δ(n)\left(\frac{3}{2^n}-\frac{2}{\left(-3\right)^n}\right)u\left(n\right)-\delta\left(n\right)  

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