engineering recuitment NCRTC Junior Engineer Mock Test Series 2025 Signals and Systems Discrete Time Signals and Systems Operation on Signals
निम्नलिखित में से कौन-सा एक, क्रमविनिमेय नियम नहीं है ?
1
A * b = b * A
2
A + b = b + A
3
A - b = b - A
4
A * B = B * A