Q. Given the function y=(10x−1+10+8x−3)(9x2−5), find dxdy in any form.Answer: dxdy=
Apply Product Rule: We are given the function y=(10x−1+10+8x−3)(9x2−5). To find the derivative dxdy, 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.
Find Derivatives: Let's denote the first function as f(x)=10x−1+10+8x−3 and the second function as g(x)=9x2−5. We will first find the derivatives f′(x) and g′(x).
Use Power Rule: The derivative of f(x) with respect to x is f′(x)=dxd(10x−1+10+8x−3). Using the power rule, we get f′(x)=−10x−2−24x−4.
Apply Product Rule: The derivative of g(x) with respect to x is g′(x)=dxd(9x2−5). Using the power rule, we get g′(x)=18x.
Simplify Expression: Now, we apply the product rule: f(x)g(x))' = f'(x)g(x) + f(x)g'(x)\. Substituting the derivatives we found, we get \$\frac{dy}{dx} = (-10x^{-2} - 24x^{-4})(9x^{2} - 5) + (10x^{-1} + 10 + 8x^{-3})(18x).
Combine Like Terms: We simplify the expression by multiplying the terms: (dxdy=(−90x−2+50x−2−216x−4+120x−4)+(180x−1+180+144x−3)).
Further Simplification: Combine like terms: (dxdy=(−40x−2−96x−4)+(180x−1+180+144x−3)).
Final Answer: Further simplification gives us: (dxdy=−40x−2−96x−4+180x−1+180+144x−3).
Final Answer: Further simplification gives us: (dy)/(dx)=−40x−2−96x−4+180x−1+180+144x−3.We can write the final answer in a more simplified form by ordering the terms according to the powers of x: (dy)/(dx)=180x−1−40x−2+144x−3−96x−4+180.
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