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Category Archives: School Learning

In each of the Questions 1 to 6 verify that the given functions (explicit) is a solution of the corresponding differential equation: Question 1. y… Read More
Question 1. If a parabolic reflector is 20 cm in diameter and 5 cm deep, find the focus. Solution: The origin of the coordinate plane… Read More
Question 1. Write the following in decimal form and say what kind of decimal expansion each has : (i) 36/100  Solution: In the given question, we… Read More
Question 1. Which of the following pairs of linear equations has unique solution, no solution, or infinitely many solutions. In case there is a unique… Read More
Question 1. Let ∆ ABC ~ ∆ DEF and their areas be, respectively, 64 cm2 and 121 cm2. If EF = 15.4 cm, find BC.… Read More
Question 1. Which of the following statements are true for a rectangle? (i) It has two pairs of equal sides. (ii) It has all its… Read More
Question 12. If three points A(h, 0), P(a, b) and B(0, k) lie on a line, show that a/h + b/k = 1 Solution: If… Read More
Question 1. Find the slope of the lines which make the following angles with the positive direction of x-axis: (i) -π/4 Solution: We have  θ… Read More
Question 1. Which of the following are nets for a cube? Solution: Diagram (iv), (v), (vi) are the nets for a cube. Question 2. Name… Read More
Question 1. Check whether the following are quadratic equations : (i) (x + 1)2 = 2(x – 3)  Solution: Here, LHS = (x + 1)2… Read More
Suppose we want to compare the age of students in two schools and determine which school has more aged students. If we compare on the… Read More
Integration by substitution is one of the important methods for finding the integration of the function where direct integration can not be easily found. This… Read More
We use general things around us that are moving, like if we see around us, monitor air moving around us, like we have clocks with… Read More
Laws of Reflection is a principle or rule that governs the phenomenon of reflection of light. The law of reflection states that a light ray… Read More