Q. Assume thatx and y are both differentiable functions of t and find the required values of dtdy and dtdx.xy=6(a) Find dtdy, given x=6 anddtdx=13.
Differentiate equation with respect to t: Differentiate both sides of the equation xy=6 with respect to t. Using the product rule for differentiation, we get dtd(xy)=dtd(6). This simplifies to xdtdy+ydtdx=0, since the derivative of a constant is 0.
Substitute given values: Substitute the given values into the differentiated equation.We know that x=6 and dtdx=13. So we substitute these values into the equation from Step 1 to get:6dtdy+y(13)=0.
Solve for dtdy: Solve for dtdy. We need to express y in terms of x using the original equation xy=6. Since x=6, we have 6y=6, which means y=1. Now we substitute y=1 into the equation from Step 2 to get: 6(dtdy)+1(13)=0.
Isolate dtdy: Isolate dtdy. To isolate dtdy, we subtract 13 from both sides of the equation: 6(dtdy)=−13. Now, divide both sides by 6 to solve for dtdy: dtdy=−613.
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