Exercise 5.2 - Chapter 5 - Differential Calculus - 11th Business Maths Guide Samacheer Kalvi Solutions
Updated On 26-08-2025 By Lithanya
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Exercise 5.2
Text Book Back Questions and Answers
Question 1.
Evaluate the following:
Solution:
[Divide both numerator and denominator by x – a; 
Question 2.
Solution:
9 . a9-1 = 3 + 6
9 . a8 = 9
a8 = 1
Taking squareroot on bothsides, we get
a4 = ±1
But a4 = -1 is imposssible.
∴ a4 = 1
Again taking squareroot, we get
a2 = ±1
a2 = -1 is imposssible
∴ a2 = 1
Again taking positive squareroot, a = ±1
Question 3.
then find the least positive integer n.
Solution:
Question 4.
Solution:
Question 5.
f(x)=1, then show that f(-2) = 0
Solution:
Hence Proved.
