Support the Monkey! Tell All your Friends and Teachers

Help / FAQ


Example 3 Solve - 6x > 24 x Î N

Solution :

- 6x > 24

1 (- 6x) > 1 (24) ...(Multiplying by 1/6 to both sides)
6              6

Þ - x > 4

Þ x < - 4         ....(inequality reverses due to change
                            of sign on both the sides)

Þx = - 5, - 6, -7 .....so on. x Î N

Example 4 Solve the inequality 2 (x + 1) - 3 (x - 4/3) > 7x x Î Q

Solution :

2(x + 1) - 3 (x - 4/3) > 7x x Î Q

2x + 2 - 3x + 4 > 7x

- x + 6 > 7x

- x + 6 + x > 7x + x ......(adding x on both sides)

Example 5 Solve

Solution :

For any x, x2 0 \ x2 + 5 > 0

(Multiplying by x2 + 5 to both the sides)

(x2 + 5) £ (x2 + 5)

x - 3 £ 2             ..... (a < b and c > 0 then ac < bc)

Þ      x - 3 + 3 £ 2 + 3

Þ      x £ 5

[next page]

 

Index

Introduction

1.1 Functions And Mapping
1.2 Functions, Their Graphs and Classification
1.3 Rules for Drawing the Graph of a Curve
1.4 Classification of Functions
1.5 Standard Forms for the equation of a straight line
1.6 Circular Function and Trigonometry

Chapter 2





All Contents Copyright © All rights reserved.
Further Distribution Is Strictly Prohibited.

743 PinkMonkey users are on the site and studying right now.