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Recent questions tagged sequence
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GATE Electrical 2015 Set 2 | Question: 35
The $z$-Transform of a sequence $x[n]$ is given as $X(z)=2z+4-4/z+3/z^{2}$. If $y[n]$ is the first difference of $x[n]$, then $Y(z)$ is given by $2z+2-8/z+7/z^{2}-3/z^{3}$ $-2z+2-6/z+1/z^{2}-3/z^{3}$ $-2z-2+8/z-7/z^{2}+3/z^{3}$ $4z-2-8/z-1/z^{2}+3/z^{3}$
makhdoom ghaya
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Signals and Systems
Feb 12, 2017
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makhdoom ghaya
9.3k
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gate2015-ee-2
sequence
complex-frequency-domain-representation
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GATE Electrical 2016 Set 1 | GA Question: 5
In a quadratic function, the value of the product of the roots $(\alpha, \beta)$ is $4$. Find the value of $\dfrac{\alpha^{n}+\beta^{n}}{\alpha^{-n}+\beta^{-n}}$ $n^{4}$ $4^{n}$ $2^{2n-1}$ $4^{n-1}$
makhdoom ghaya
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Linear Algebra
Jan 30, 2017
by
makhdoom ghaya
9.3k
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gate2016-ee-1
functions
roots
sequence
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