sketching graphs Watch
- Thread Starter
- 11-12-2010 16:06
- 11-12-2010 16:11
Think about the x axis intercepts as well, i.e. solve y=0. E.g. x=2 works, and then factorise it to:
(x-2)(x^2 -x -2)
x=2 was a guess, and then solve the quadratic to get the other two.
- 12-12-2010 13:51
You always have to put x and y equal to zero to find the points where a graph crosses the x axis and the y axis.