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WAEC - Mathematics (1994 - No. 19)
In the graph above, the gradient of the curve at the point P is
-1
1
3
-
3
4
3/7
3/4
1
1
3
解释
-1-(-3)/-2-(-0.5) = 2/-1.5 = 20/-15 = -1
1
3
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