Q. Given the function f(x)=(6+10x3)(8x3−10+8x), find f′(x) in any form.Answer: f′(x)=
Product Rule Explanation: To find the derivative of the function f(x)=(6+10x3)(8x3−10+8x), we will use the product rule. The product rule 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.
Denote Functions: Let's denote the first function as u(x)=6+10x3 and the second function as v(x)=8x3−10+8x. We will find the derivatives of u(x) and v(x) separately.
Derivative of u(x): The derivative of u(x)=6+10x3 with respect to x is u′(x)=0+30x2, since the derivative of a constant is 0 and the derivative of x3 is 3x2 multiplied by the coefficient 10.
Derivative of v(x): The derivative of v(x)=8x3−10+8x with respect to x is v′(x)=24x2+0+8, since the derivative of x3 is 3x2 multiplied by the coefficient 8, the derivative of a constant is 0, and the derivative of x is 1 multiplied by the coefficient 8.
Apply Product Rule: Now we apply the product rule: f′(x)=u′(x)v(x)+u(x)v′(x). Substituting the derivatives we found, we get f′(x)=(30x2)(8x3−10+8x)+(6+10x3)(24x2+8).
Expand Terms: We will now expand the terms: f′(x)=240x5−300x2+240x3+144x2+240x5+80x.
Combine Like Terms: Combine like terms to simplify the expression: f′(x)=240x5+240x5+240x3−300x2+144x2+80x.
Final Answer: After combining like terms, we get f′(x)=480x5+240x3−156x2+80x.
Final Answer: After combining like terms, we get f′(x)=480x5+240x3−156x2+80x.We have found the derivative of the function f(x) in its simplified form. The final answer is f′(x)=480x5+240x3−156x2+80x.
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