Introduction to the derivative of 1/f(x)
Derivatives have a wide range of applications in almost every field of engineering and science. The 1/f(x) derivative can be calculated by following the differentiation rules. Or, we can directly find the derivative formula of 1/f(x) by applying the first principle of differentiation. In this article, you will learn what the 1/f(x) derivative formula is and how to calculate the derivatives of 1 by f(x) by using different approaches.
What is the derivative of 1/f(x)?
The derivative of 1 by f(x) with respect to the variable x is equal to -1/(f(x))^2. It measures the rate of change of the algebraic function 1/f(x). It is denoted by d/dx(1/f(x)) which is a fundamental concept in calculus. Knowing the formula for derivatives and understanding how to use it can be used in solving problems related to velocity, acceleration, and optimization.
Derivative of 1/f(x) formula
The formula for derivative of f(x)=1/f(x) is equal to the -1/(f(x))^2, that is;
$$f'(x) = \frac{d}{dx} (\frac{1}{f(x)}) = -\frac{1}{(f(x))^2}$$
It is calculated by using the power rule, which is defined as:
$$\frac{d}{dx} (x^n)=nx^{n-1}$$
How do you differentiate 1/f(x)?
There are multiple ways to prove the differentiation of 1/f(x). These are;
- Product Rule
- Quotient Rule
Each method provides a different way to compute the 1/f(x) differentiation. By using these methods, we can mathematically prove the formula for finding the differential of 1/f(x).
Derivative of 1/f(x) by product rule
The formula for derivative 1/f(x) can be calculated by using the product rule because an algebraic function can be written as the combination of two functions. The product rule derivative is defined as;
$$[uv]’ = u’.v + u.v’$$
Proof of differentiating of 1/f(x) by product rule
To differentiate of 1/f(x) by using product rule, we start by assuming that,
$$y = 1. (\frac{1}{f(x)})$$
By using product rule of differentiation,
$$\frac{dy}{dx} = (1)’. \frac{1}{f(x)} + (1)\frac{-1}{(f(x))^2}$$
We get,
$$\frac{dy}{dx} = 0-\frac{1}{(f(x))^2}$$
Hence,
$$\frac{dy}{dx} =-\frac{1}{(f(x))^2}$$
Also use our product rule calculator online, as it provides you a step-by-step solution of differentiation of a function.
Derivative of 1/f(x) using quotient rule
Another method for finding the differential of 1/f(x) is using the quotient rule, which is a formula for finding the derivative of a quotient of two functions. Since the secant function is the reciprocal of cosine, the derivative of cosecant can also be calculated using the quotient rule. The derivative quotient rule is defined as:
$$\frac{d}{dx}\left(\frac{f}{g}\right) = \frac{f’(x). g(x) - g’(x).f(x)}{(g(x))^2}$$
Proof of differentiating 1/f(x) by quotient rule
To prove the 1/f(x) derivative, we can start by writing it,
$$f(x) = \frac{1}{x}= \frac{u}{v}$$
Supposing that u = 1 and v = f(x). Now by quotient rule,
$$f’(x) =\frac{vu’ - uv’}{v^2}$$
$$f’(x) = \frac{f(x).(1)’ - f’(x)}{(f(x))^2}$$
$$f’(x)= \frac{0-f’(x)}{(f(x))^2}$$
$$f’(x)= \frac{-f’(x)}{(f(x))^2}$$
Hence, we have derived the derivative of 1 by f(x) using the quotient rule of differentiation. Use our quotient rule calculator to find the derivative of any quotient function.
How to find the derivatives of 1/f(x) with a calculator?
The easiest way of differentiating 1/f(x) is by using a dy/dx calculator. You can use our derivative calculator for this. Here, we provide you a step-by-step way to calculate derivatives by using this tool.
- Write the function as 1/f(x) in the enter function box. In this step, you need to provide input value as a function that you want to differentiate.
- Now, select the variable by which you want to differentiate 1/f(x). Here you have to choose x.
- Select how many times you want to calculate the derivatives of 1/f(x). In this step, you can choose 2 for second, 3 for triple differentiation and so on.
- Click on the calculate button. After this step, you will get the derivative of 1 by f(x) within a few seconds.
- After completing these steps, you will receive the differential of 1/f(x) within seconds. Using online tools can make it much easier and faster to calculate derivatives, especially for complex functions.
Conclusion:
In conclusion, the derivative of 1/f(x). The derivative measures the rate of change of a function with respect to its independent variable, and in the case of 1/f(x), the derivative can be calculated using the power rule, product rule and quotient rule of differentiation.