Identify Function and Rule: Identify the function that needs differentiation and the rule that should be applied. The function y=sin(x)x can be rewritten as y=x⋅sin(x)−1. To differentiate this function, we will use the product rule, which states that the derivative of a product of two functions is the derivative of the first function times the second function plus the first function times the derivative of the second function.
Differentiate First Function: Differentiate the first function, which is x. The derivative of x with respect to x is 1.
Differentiate Second Function: Differentiate the second function, which is sin(x)−1. The derivative of sin(x)−1 with respect to x is −sin(x)2cos(x), which is derived using the chain rule and the derivative of sin(x), which is cos(x).
Apply Product Rule: Apply the product rule. The derivative of y with respect to x is (1⋅sin(x)−1)+(x⋅(−cos(x)/sin(x)2)).
Simplify Expression: Simplify the expression. The derivative of y with respect to x is sin(x)−1−sin(x)2xcos(x).
Combine Terms: Combine terms over a common denominator to further simplify the expression. The derivative of y with respect to x is sin(x)21−xcos(x).
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