InterviewSolution
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6)Express {(x, y) / x2 +y2 = 100 wherex, y e W} as a set of ordered pairs. |
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Answer» Given that {(x, y) / x² + y² = 100, where x, y ∈ W} Since x, y ∈ W Let x = 0 , then y² = 100 ⇒ y = ± 10 But y ∈ W, so y = 10 Hence (0, 10) is an ordered pair. Let x = 1 ⇒ 1² + y² = 100 ⇒ y² = 99 ⇒ y = ±√99 ∉W So on continuing for each value of x , we observe that for x = 6 6² + y² = 100, ⇒ y² = 100 - 36 = 64 ⇒ y = ± 8 but -8∉W, hence y = 8 So, (6, 8) is an ordered pair Similarly (8, 6) and (10, 0) are also ordered pair by interchanging x and y values, and also there are no other ordered pairs such that both x, y ∈ W and x² + y² = 100. Hence, the only ordered pairs are {(0, 10), (6, 8), (8, 6), (10, 0)} hope this will help you like my answer and MARK IT AS BEST ANSWER. nice hai toh sawal okk |
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