Q. Given the function y=327xsinx, find dxdy in any form.
Identify Function Components: Identify the function components to differentiate.The function y=327xsin(x) can be rewritten as y=(27x)31⋅sin(x). This function is a product of two functions: u(x)=(27x)31 and v(x)=sin(x).
Apply Product Rule: Apply the product rule for differentiation.The product rule states that the derivative of a product of two functions u(x) and v(x) is given by u′(x)v(x)+u(x)v′(x). We will use this rule to find dxdy.
Differentiate First Function: Differentiate the first function u(x)=(27x)31. Using the power rule, the derivative of u with respect to x is u′(x)=31(27x)−32×27=9(27x)−32.
Differentiate Second Function: Differentiate the second function v(x)=sin(x).The derivative of v with respect to x is v′(x)=cos(x).
Apply Product Rule: Apply the product rule using the derivatives from steps 3 and 4.(dxdy)=u′(x)v(x)+u(x)v′(x)=9(27x)−32⋅sin(x)+(27x)31⋅cos(x).
Simplify Expression: Simplify the expression if possible.The expression is already in a simplified form, so we can state the final answer.dxdy=9(27x)−32⋅sin(x)+(27x)31⋅cos(x).
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