# power equation of the signal(contineous or descrete)

as we know that power equation of the signal is given as

P(t)=integral(t1 to t2) XSquare(t)

also

P(t)=integral(t1 to t2) Xmodulus(t)

to make the negative sign of signal positive.

My question is why we use equation no. 1 instead of of no.2 more frequently.? Is the answer is more reliable or what.?

plz help me this.

thanks

P(t)=integral(t1 to t2) XSquare(t)

also

P(t)=integral(t1 to t2) Xmodulus(t)

to make the negative sign of signal positive.

My question is why we use equation no. 1 instead of of no.2 more frequently.? Is the answer is more reliable or what.?

plz help me this.

thanks

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