Q. Let g(x)=exsin(x).Find g′(x).Choose 1 answer:(A) excos(x)(B) cos(x)−ex(C) ex(cos(x)−sin(x))(D) excos(x)−sin(x)
Apply Quotient Rule: Apply the quotient rule to find the derivative of g(x)=exsin(x). The quotient rule states that if you have a function h(x)=g(x)f(x), then h′(x)=(g(x))2f′(x)g(x)−f(x)g′(x).
Identify Functions: Identify the functions f(x) and g(x) where f(x)=sin(x) and g(x)=ex. We need to find the derivatives f′(x) and g′(x).
Find f′(x): Find the derivative of f(x)=sin(x). The derivative of sin(x) with respect to x is cos(x), so f′(x)=cos(x).
Find g′(x): Find the derivative of g(x)=ex. The derivative of ex with respect to x is ex, so g′(x)=ex.
Apply Quotient Rule: Apply the quotient rule using the derivatives from steps 3 and 4. g′(x)=(g(x))2f′(x)g(x)−f(x)g′(x)=(ex)2cos(x)ex−sin(x)ex.
Simplify Expression: Simplify the expression from step 5. Since ex is common in both terms in the numerator, we can factor it out. g′(x)=(ex)2ex(cos(x)−sin(x)).
Match Correct Answer: Simplify further by canceling out one ex from the numerator and denominator. g′(x)=excos(x)−sin(x).
Match Correct Answer: Simplify further by canceling out one ex from the numerator and denominator. g′(x)=excos(x)−sin(x).Match the simplified derivative to the given answer choices. The correct answer is (D) excos(x)−sin(x).
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