Class 11 RS Aggarwal Chapter-28 Differentiation Solutions
FAQs on RS Aggarwal Class 11 Solutions Chapter-28 Differentiation
1. Where can I find complete solutions for all exercises in RS Aggarwal Class 11 Maths Chapter 28, Differentiation?
Vedantu provides detailed, step-by-step solutions for all exercises found in the RS Aggarwal Class 11 Maths textbook for Chapter 28, Differentiation. These solutions are prepared by subject matter experts to help you understand the correct problem-solving methodology for exercises like 28A, 28B, 28C, and so on, aligning with the 2025-26 syllabus.
2. What is the correct method to differentiate a basic function like xⁿ using the power rule in this chapter?
To differentiate a function of the form f(x) = xⁿ, you must apply the power rule of differentiation. The rule states that the derivative is nxⁿ⁻¹. For example, to find the derivative of x⁵, you bring the power (5) to the front as a coefficient and reduce the existing power by one, which results in 5x⁴. This is a foundational rule for solving most problems in Chapter 28.
3. How do you apply the chain rule to solve differentiation problems in RS Aggarwal Chapter 28?
The chain rule is essential for differentiating a 'function of a function' (composite functions). The step-by-step method is as follows:
- First, identify the outer function and the inner function.
- Differentiate the outer function while keeping the inner function unchanged.
- Finally, multiply this result by the derivative of the inner function.
4. What is the step-by-step process for using the product rule for differentiation as per the RS Aggarwal textbook?
The product rule is used to find the derivative of a product of two functions, let's say u(x) and v(x). The formula is u'(x)v(x) + u(x)v'(x). The steps are:
- Identify the first function (u) and the second function (v).
- Find the derivative of the first function (u') and the second function (v').
- Substitute these into the formula: (Derivative of the first function × Second function) + (First function × Derivative of the second function).
5. How do you differentiate functions in the form of a fraction using the quotient rule?
To differentiate a function that is a fraction, such as f(x) = u(x)/v(x), you must use the quotient rule. The formula is [u'(x)v(x) - u(x)v'(x)] / [v(x)]². A simpler way to remember this is: (Derivative of Numerator × Denominator - Numerator × Derivative of Denominator), all divided by the (Denominator)². This rule is crucial for solving many fractional function problems in the RS Aggarwal exercises.
6. What is the fundamental difference between differentiation and integration in calculus?
Differentiation and integration are inverse operations. Differentiation is the process of finding the instantaneous rate of change of a function. Geometrically, it represents the slope of the tangent to the curve at a specific point. In contrast, integration is the process of summing up infinitely small areas. Geometrically, it is used to find the area under the curve.
7. How are the concepts from Class 11 Differentiation applied in real-world scenarios like Physics?
Differentiation is a fundamental tool in Physics, especially in kinematics. For instance:
- The derivative of an object's position function with respect to time gives its instantaneous velocity.
- The derivative of the velocity function with respect to time gives its instantaneous acceleration.
8. Why is the derivative of any constant always zero? What is the logic behind this rule?
The derivative of a function measures its rate of change. A constant function, such as f(x) = 7, has the same value regardless of the value of x. Since the function's value never changes, its rate of change is logically zero. Graphically, the function f(x) = c represents a horizontal line, and the slope of any horizontal line is always zero.











