y=x/(√a²-x²),求dy/dx!

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y=x/(√a²-x²),求dy/dx!y=x/(√a²-x²),求dy/dx!y=x/(√a²-x²),求dy/dx!dy/dx=[x/√

y=x/(√a²-x²),求dy/dx!
y=x/(√a²-x²),求dy/dx!

y=x/(√a²-x²),求dy/dx!
dy/dx=[x/√(a²-x²)]'
=[√(a²-x²)+x²/√(a²-x²)]/(a²-x²)
=[(a²-x²)+x²]/(a²-x²)^(3/2)
=a²/(a²-x²)^(3/2).