Q. Given the function f(x)=(1+3x−3+6x−2)(−8x2−6), find f′(x) in any form.Answer: f′(x)=
Find Derivative of f(x): We need to find the derivative of the function f(x) which is a product of two functions: (1+3x−3+6x−2) and (−8x2−6). 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.
Derivative of g(x): First, let's find the derivative of the first function, g(x)=1+3x−3+6x−2. The derivative of a sum of functions is the sum of their derivatives. So we will find the derivatives of 1, 3x−3, and 6x−2 separately.
Derivative of h(x): The derivative of a constant is 0, so dxd(1)=0.
Apply Product Rule: Using the power rule, (d)/(dx)(xn)=nx(n−1), we find the derivative of 3x−3 as follows:(d)/(dx)(3x−3)=3×(−3)×x(−3−1)=−9x−4.
Combine Derivatives: Similarly, we find the derivative of 6x−2 as follows:dxd(6x−2)=6⋅(−2)⋅x−2−1=−12x−3.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3. Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0. Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x.The derivative of −6 is 0, so dxd(−6)=0.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x.The derivative of −6 is 0, so dxd(−6)=0.Now we can combine the derivatives of the parts of the second function: h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows:dxd(−8x2)=−8×2×x2−1=−16x.The derivative of −6 is 0, so dxd(−6)=0.Now we can combine the derivatives of the parts of the second function:h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x.Using the product rule, we find the derivative of the product of g(x) and h(x)=−8x2−60:h(x)=−8x2−61
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3. Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x. The derivative of −6 is 0, so dxd(−6)=0. Now we can combine the derivatives of the parts of the second function: h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x. Using the product rule, we find the derivative of the product of g(x) and h(x): f′(x)=g′(x)h(x)+g(x)h′(x). Substitute the derivatives and original functions into the product rule formula: h(x)=−8x2−60.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3. Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0. Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x. The derivative of −6 is 0, so dxd(−6)=0. Now we can combine the derivatives of the parts of the second function: h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x. Using the product rule, we find the derivative of the product of g(x) and h(x)=−8x2−60: h(x)=−8x2−61 Substitute the derivatives and original functions into the product rule formula: h(x)=−8x2−62 Now we need to simplify the expression. We will distribute the terms and combine like terms where possible. Let's start with the first part of the product rule: h(x)=−8x2−63
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3.Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows:dxd(−8x2)=−8×2×x2−1=−16x.The derivative of −6 is 0, so dxd(−6)=0.Now we can combine the derivatives of the parts of the second function:h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x.Using the product rule, we find the derivative of the product of g(x) and h(x)=−8x2−60:h(x)=−8x2−61.Substitute the derivatives and original functions into the product rule formula:h(x)=−8x2−62.Now we need to simplify the expression. We will distribute the terms and combine like terms where possible. Let's start with the first part of the product rule:h(x)=−8x2−63.Now let's distribute the second part of the product rule:h(x)=−8x2−64.
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3. Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0.Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x. The derivative of −6 is 0, so dxd(−6)=0.Now we can combine the derivatives of the parts of the second function: h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x. Using the product rule, we find the derivative of the product of g(x) and h(x): f′(x)=g′(x)h(x)+g(x)h′(x). Substitute the derivatives and original functions into the product rule formula: h(x)=−8x2−60 Now we need to simplify the expression. We will distribute the terms and combine like terms where possible. Let's start with the first part of the product rule: h(x)=−8x2−61 Now let's distribute the second part of the product rule: h(x)=−8x2−62 Combine the distributed terms from both parts of the product rule: h(x)=−8x2−63
Simplify Expression: Now we can combine the derivatives of the parts of the first function: g′(x)=dxd(1)+dxd(3x−3)+dxd(6x−2)=0−9x−4−12x−3. Next, we find the derivative of the second function, h(x)=−8x2−6. The derivative of a constant times a function is the constant times the derivative of the function, and the derivative of a constant is 0. Using the power rule again, we find the derivative of −8x2 as follows: dxd(−8x2)=−8×2×x2−1=−16x. The derivative of −6 is 0, so dxd(−6)=0. Now we can combine the derivatives of the parts of the second function: h′(x)=dxd(−8x2)+dxd(−6)=−16x+0=−16x. Using the product rule, we find the derivative of the product of g(x) and h(x)=−8x2−60: h(x)=−8x2−61. Substitute the derivatives and original functions into the product rule formula: h(x)=−8x2−62. Now we need to simplify the expression. We will distribute the terms and combine like terms where possible. Let's start with the first part of the product rule: h(x)=−8x2−63. Now let's distribute the second part of the product rule: h(x)=−8x2−64. Combine the distributed terms from both parts of the product rule: h(x)=−8x2−65. Simplify by combining like terms: h(x)=−8x2−66.
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