The curve y = x 3 + 5x 1 cuts the x-axis at the point (,
Question:
The curve y = x3 + 5x − 1 cuts the x-axis at the point (α, 0).
a. By sketching the graph of y = x3 and one other suitable graph, deduce that this is the only point where the curve y = x3 + 5x − 1 cuts the x-axis.
b. Using calculations, show that 0.1< α < 0.5.
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a The graph of y x3 is a cubic function passing through the origin The graph of y 5x 1 ...View the full answer
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Related Book For 
Cambridge International AS & A Level Mathematics Pure Mathematics 2 & 3 Coursebook
ISBN: 9781108407199
1st Edition
Authors: Sue Pemberton, Julianne Hughes, Julian Gilbey
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