14
Feb
Class 9 | Chapter 3 | Coordinate Geometry | Exercise 3.1 | Question 1
Question 1: How will you describe the position of a table lamp on your study table to another person? Activity 1 Question 2
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14
Feb
Class 9 | Chapter 3 | Coordinate Geometry | Activity 1
Activity 1: Draw a plan of the seating in your classroom, pushing all the desks together. Represent each desk by a square. In each square, write the name of the student occupying the desk, which the square represents. Position of…
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14
Feb
Class 9 | Chapter 3 | Coordinate Geometry | Example 3 & 4
Example 3: Locate the points (5, 0), (0, 5), (2, 5), (5, 2), (–3, 5), (–3, –5), (5, –3) and (6, 1) in the Cartesian plane. Example 4: Plot the following ordered pairs of number (x, y) as points in…
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14
Feb
Class 9 | Chapter 3 | Coordinate Geometry | Example 1 & 2
Example 1: See Fig. 3.11 and complete the following statements: The abscissa and the ordinate of the point B are _ _ _ and _ _ _, respectively. Hence, the coordinates of B are (_ _, _ _). The x-coordinate…
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14
Feb
Class 9 | Chapter 1 | Number System | Example 18, 19, 20
Example 18: Rationalise the denominator of 1/ (2 + √3) Example 19: Rationalise the denominator of 5 / (√3 – √5) Example 20: Rationalise the denominator of 1/ (7 + 3√2) Example 17 Example 21
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14
Feb
Class 9 | Chapter 1 | Number System | Example 17
Example 17: Rationalise the denominator of 1/√2⋅ Example 16 Example 18, 19, 20
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14
Feb
Class 9 | Chapter 1 | Number System | Example 16
Example 16: Simplify the following expressions: (i) (5+ √7)(2+ √5) (ii) (5+ √5)(5− √5) (iii) (√3+ √7)2 (iv) (√11− √7)(√11+ √7) Example 12, 13, 14, 15 Example 17
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14
Feb
Class 9 | Chapter 1 | Number System | Example 12, 13, 14, 15
Example 12: Check whether 7 √5, 7/√5 , √2 +21, π − 2 are irrational numbers or not. Example 13: Add 2√2+5√3 and √2–3√3. Example 14: Multiply 6√5 by 2√5. Example 15: Divide 8√(15) by 2√3. Example 11 Example 16
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14
Feb
Class 9 | Chapter 1 | Number System | Example 11
Example 11: Visualize the representation of 5.373737… on the number line upto 5 decimal places, that is, up to 5.37777. Example 10 Example 12, 13, 14, 15
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14
Feb
Class 9 | Chapter 1 | Number System | Exercise 1.6 | Question 2 & 3
Question 2: Find: (i) 93/2 (ii) 322/5 (iii) 163/4 (iv) 125-1/3 Question 3: Simplify: (i)22/3⋅21/5 (ii)(1/33)7 (iii)(111/2) / (111/4) (iv)71/2⋅81/2 Question 1 Class 9 | Home
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