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If y = sqrt(x) with x > 0, what is dy/dx?
A1/sqrt(x)
B1/(2 sqrt(x))
C2 sqrt(x)
Dsqrt(x)/2
Answer & Solution
Correct answer: B. 1/(2 sqrt(x))
Writing sqrt(x) as x^(1/2) and using the power rule gives (1/2) x^(-1/2).
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