InterviewSolution
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InterviewSolution
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Consider the following figure. Answer the following questions (i) What are the roots of the f(x) = 0? (ii) What are the roots of the f(x) = 4? (iii)What are the roots of the f(x) = g (x)? |
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Answer» (i) For the roots of the equation f(x) = 0, we check the points of intersection of y = f(x) with x -axis at x = - 1 and x = 2, which are roots of the equation f(x) = 0 . (ii) For the roors of the equation f(x) = 4, we check the points of intersection of the graphs y = f(x) and y = 4 ( a line parallel to x-axis at height 4 units above it) The x -values of the poinst of intersection of graphs is x = -2 and x = 3 , which are roots of the equation f(x) = 4. (iii) For the roots of the equation f(x) = g(x), we check the points of intersection of the graphs y = f(x) and y = g(x). The x -velues of the points of intersection of graphs are x = -2 and x = 4, which are roots of the equation f(x) = g(x) |
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