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If f = v(t) and t = u(x), the chain rule gives df/dx as
A(dv/dx) x (dx/dt)
B(dv/dt) + (dt/dx)
C(dv/dt) / (dt/dx)
D(dv/dt) x (dt/dx)
Answer & Solution
Correct answer: D. (dv/dt) x (dt/dx)
The derivative of a composite is the product of the outer derivative and the inner derivative.
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