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(a) \( T_{1}T_{2} \)
(b) \( T_{1}T_{2} \)
(c) \( T_{1}=T_{2} \)
(d) \( T_{1}=...
\( \mathrm{P} \)
W
(a) \( T_{1}T_{2} \)
(b) \( T_{1}T_{2} \)
(c) \( T_{1}=T_{2} \)
(d) \( T_{1}=\frac{1}{T_{2}} \)
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