Last updated on August 12th, 2025
In calculus, differentiation is the process of finding the derivative of a function. It is essential for understanding the behavior of functions and their rates of change. In this topic, we will learn the formulas for differentiation covered in the syllabus.
Differentiation is a fundamental concept in calculus. Let's learn the formulas to calculate the derivative of various functions.
The basic differentiation formulas include:
1. The derivative of a constant function is zero.
2. The derivative of xn is nx(n-1), where n is a real number.
3. The derivative of ex is ex.
4. The derivative of ax is ax ln(a), where a is a constant.
The differentiation of trigonometric functions includes:
1. The derivative of sin x is cos x.
2. The derivative of cos x is -sin x.
3. The derivative of tan x is sec2 x.
4. The derivative of cot x is -csc2 x.
5. The derivative of sec x is sec x tan x.
6. The derivative of csc x is -csc x cot x.
The differentiation of inverse trigonometric functions includes:
1. The derivative of sin(-1) x is 1/√(1-x2).
2. The derivative of cos(-1) x is -1/√(1-x2).
3. The derivative of tan(-1) x is 1/(1+x2).
4. The derivative of cot(-1) x is -1/(1+x2).
5. The derivative of sec(-1) x is 1/(|x|√(x2-1)).
6. The derivative of csc(-1) x is -1/(|x|√(x2-1)).
In mathematics and real life, differentiation formulas are used to analyze and understand the behavior of functions. Here are some important points about differentiation:
Differentiation helps in understanding the rate of change of quantities.
It is used in various fields like physics, engineering, and economics to solve real-world problems.
By learning these formulas, students can easily grasp advanced calculus concepts.
Students often find differentiation formulas challenging. Here are some tips and tricks to master them:
Use mnemonics to remember the sequence of differentiation formulas.
Practice derivations regularly to reinforce your understanding.
Create a formula chart for quick reference and use flashcards to memorize them.
Students make errors when applying differentiation formulas. Here are some mistakes and ways to avoid them:
Differentiate f(x) = x^3 + 5x^2 - 4x + 7 with respect to x.
The derivative is f'(x) = 3x2 + 10x - 4
To differentiate, apply the power rule: f'(x) = 3x(3-1) + 5(2)x(2-1) - 4(1)x(1-1) + 0 = 3x2 + 10x - 4
Differentiate f(x) = sin x + cos x with respect to x.
The derivative is f'(x) = cos x - sin x
Apply the trigonometric differentiation rules: The derivative of sin x is cos x, and the derivative of cos x is -sin x. So, f'(x) = cos x - sin x
Find the derivative of g(x) = e^x * ln x.
The derivative is g'(x) = ex * ln x + ex/x
Using the product rule, where u = ex and v = ln x: g'(x) = u'v + uv' = ex * ln x + ex * (1/x) = ex * ln x + ex/x
Differentiate h(x) = x^2 * e^x with respect to x.
The derivative is h'(x) = 2x * ex + x2 * ex
Using the product rule, where u = x2 and v = ex: h'(x) = u'v + uv' = 2x * ex + x2 * ex
Find the derivative of y = ln(x^2 + 1).
The derivative is y' = 2x/(x2 + 1)
Using the chain rule: y' = d/dx [ln(x2 + 1)] = 1/(x2 + 1) * 2x = 2x/(x2 + 1)
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