1.

Let x1(t) and x2(t) be periodic signals with fundamental periods T1 and T2 respectively. Then the fundamental period of x(t)=x1(t)+x2(t) is?

A. LCM of T<sub>1</sub> and T<sub>2</sub>
B. HCF of T<sub>1</sub>and T<sub>2</sub>
C. Product of T<sub>1</sub> and T<sub>2</sub>
D. Ratio of T<sub>1</sub> to T<sub>2</sub>
Answer» B. HCF of T<sub>1</sub>and T<sub>2</sub>


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