MCQ
Which of the following relations is incorrect
- A$(A + B + .... + l)' = A' + B' + .... + l'$
- ✓$(AB....l)' = A'B'....l'$
- C$(kA)' = kA'$
- D$(A)' = A$
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$(A)$ $I_n=I_{n+2}$
$(B)$ $\sum_{m=1}^{10} I_{2 m+1}=10 \pi$
$(C)$ $\sum_{m=1}^{10} I_{2 m}=0$
$(D)$ $ I_n=I_{n+1}$