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For the following equation, what is the instantaneous rate of change at 
x=1 ?

f(x)=-2x^(5)+2x^(2)-5
Answer:

For the following equation, what is the instantaneous rate of change at x=1 x=1 ?\newlinef(x)=2x5+2x25 f(x)=-2 x^{5}+2 x^{2}-5 \newlineAnswer:

Full solution

Q. For the following equation, what is the instantaneous rate of change at x=1 x=1 ?\newlinef(x)=2x5+2x25 f(x)=-2 x^{5}+2 x^{2}-5 \newlineAnswer:
  1. Identify function and point: Identify the function and the point at which the instantaneous rate of change is required.\newlineThe function given is f(x)=2x5+2x25f(x) = -2x^{5} + 2x^{2} - 5, and we need to find the instantaneous rate of change at x=1x = 1.
  2. Calculate derivative of function: Calculate the derivative of the function f(x)f(x). The derivative of f(x)f(x) with respect to xx is f(x)=ddx(2x5)+ddx(2x2)ddx(5)f'(x) = \frac{d}{dx}(-2x^{5}) + \frac{d}{dx}(2x^{2}) - \frac{d}{dx}(5). Using the power rule, the derivative of 2x5-2x^{5} is 10x4-10x^{4}, the derivative of 2x22x^{2} is 4x4x, and the derivative of a constant is 00. So, f(x)=10x4+4xf'(x) = -10x^{4} + 4x.
  3. Evaluate derivative at x=1x=1: Evaluate the derivative at x=1x = 1 to find the instantaneous rate of change at that point.\newlineSubstitute x=1x = 1 into the derivative f(x)f'(x) to get f(1)=10(1)4+4(1)f'(1) = -10(1)^{4} + 4(1).\newlineThis simplifies to f(1)=10+4f'(1) = -10 + 4.
  4. Calculate final instantaneous rate: Calculate the final value of the instantaneous rate of change at x=1x = 1.f(1)=10+4=6.f'(1) = -10 + 4 = -6.

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