Differential Calculus - Question

In summary, differential calculus is a branch of mathematics that deals with the study of rates of change of mathematical functions. It has various applications in fields such as physics, engineering, economics, and statistics. Differential calculus is different from integral calculus in that it focuses on derivatives, while integral calculus focuses on integrals. The basic rules of differential calculus include the power rule, product rule, quotient rule, and chain rule. To improve understanding of differential calculus, practice and additional resources can be helpful.
  • #1
studentxlol
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Homework Statement



I don't understand how this can be written like this:

[tex]\frac{1}{(2x+1)^{1/2}}-\frac{1}{(2x+1)^{3/2}}=\frac{2x+1-1}{(2x+1)^{3/2}}=\frac{2x}{(2x+1)^{3/2}}[/tex]


What's the rule which makes this possible and explain please.
 
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  • #2
The "rule" is one that you probably learned in the third grade: you add or subtract fractions by getting a "common denominator".

The first fraction has denominator [itex](2x+1)^{1/2}[/itex]. The second fraction has denominator [itex](2x+ 1)^{3/2}= (2x+1)^{1+ 1/2}= (2x+1)(2x+1)^{1/2}[/itex].

In other words, the common denominator is [itex](2x+1)^{3/2}[/itex] and you get it by multiplying the numerator and denominator of the first fraction by 2x+1.
 

FAQ: Differential Calculus - Question

What is differential calculus?

Differential calculus is a branch of mathematics that deals with the study of rates of change of mathematical functions. It involves the calculation of derivatives, which represent the instantaneous rate of change of a function at a specific point.

What are the applications of differential calculus?

Differential calculus has various applications in fields such as physics, engineering, economics, and statistics. It is used to model and analyze real-world phenomena, such as motion, growth, and optimization problems.

How is differential calculus different from integral calculus?

Differential calculus focuses on the calculation of derivatives, while integral calculus deals with the calculation of integrals. Derivatives represent the instantaneous rate of change, while integrals represent the accumulation of a function over an interval. These two branches of calculus are closely related and are used together in many applications.

What are the basic rules of differential calculus?

The basic rules of differential calculus include the power rule, product rule, quotient rule, and chain rule. These rules are used to calculate the derivatives of different types of functions, such as polynomials, exponential, and trigonometric functions.

How can I improve my understanding of differential calculus?

To improve your understanding of differential calculus, it is important to practice solving problems and working through applications. You can also seek out additional resources, such as textbooks, online courses, and tutors, to deepen your understanding of the concepts and techniques involved in differential calculus.

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