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Basic Mathematics – I
Notes
Figure 6.3
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3
2
3
(c) Let f(x) = x , then f(–x) = –x = –f(x) y = x is an odd function. This function is symmetric
about origin.
When x = 0, then y = 0, the graph of the function passes through origin. Further, y is
positive (negative) when x is positive (negative). Therefore the graph lies in I and III
Quadrants. Note that the values of y increases as x increases. Thus, the function is
monotonically increasing in its domain. Based on these features, the broad graph is shown
in Figure 6.4.
Figure 6.4
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Figure 6.5
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