y=ax2+bx+c -এর অন্তরক সমীকরণ হবে_

A d3ydx3=0
B d2ydx2+2a=0
C dydx+2ax-b=0
D d3ydx2+d2ydx2+dydx-2ay=0

Correct Answer: dydx+2ax-b=0

Rules: dx^n/dx = nx^(n - 1). dc/dx = 0
Bissoy MCQ

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