What is the value of 2 × 2 determinant |a b; c d|?
2 × 2 determinant |a b; c d| का मान क्या होता है?
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Correct Answer
A. ad - bc
ExplanationStep 1: Identify the concept: this is 2 × 2 determinant formula. Step 2: The determinant equals main diagonal product minus other diagonal product which is ad - bc. Step 3: Cross multiply and subtract.
Step 1: concept पहचानें: यह 2 × 2 determinant formula है। Step 2: determinant का मान main diagonal product minus other diagonal product यानी ad - bc होता है। Step 3: Cross multiply करके subtract करें।