鼠:δ(t) |
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1 |
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牛:C |
2πCδ(ω) |
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虎:ϵ(t) |
πδ(ω)+jω1 |
s1 |
z−1z |
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兔:sgn(t) |
jω2 |
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龙:ejωct |
2πδ(ω−ωc) |
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蛇:cosωct |
π[δ(ω+ωc)+δ(ω−ωc)] |
cosωctϵ(t)↔s2+ωc2s |
cosβkTϵ(k)↔z2−2zcosβT+1z(z−cosβT) |
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马:sinωct |
jπ[δ(ω+ωc)−δ(ω−ωc)] |
sinωctϵ(t)↔s2+ωc2ωc |
sinβkTϵ(k)↔z2−2zcosβT+1zsinβT |
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羊:21∑n=−∞∞AnejnΩt |
π∑n=−∞∞Anδ(ω−nΩ) |
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猴:δT(t)=∑n=−∞∞δ(t−nT) |
∑n=−∞∞ejnTω=ΩδΩ(ω),Ω=T2π |
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鸡:A(1−τ∥t∥),∥t∥≤2τ |
AτSa2(2τω) |
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狗:AGτ(t)=A,∥t∥≤2τ |
AτSa(2τω) |
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猪:e−αtϵ(t),α>0 |
α+jω1 |
s+α1 |
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e−α∥t∥ϵ(t),α>0 |
α2+ω22α |
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eαttnϵ(t) |
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(s−α)n+1n! |
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δ(n)(t) |
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sn |
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vkϵ(k) |
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z−vz |
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kvk−1ϵ(k) |
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(z−v)2z |
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Cknvk−nϵ(k) |
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(z−v)n+1z |
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