Re: Plot results not right
- To: mathgroup at smc.vnet.net
- Subject: [mg89901] Re: Plot results not right
- From: Narasimham <mathma18 at hotmail.com>
- Date: Tue, 24 Jun 2008 03:27:37 -0400 (EDT)
- References: <g3nhbc$g6$1@smc.vnet.net>
On Jun 23, 11:54 am, BrenB <GoogleGro... at ebesser.com> wrote: > I'm new to Mathematica. > > I'm studying Calculus, and I'm trying to reproduce, in Mathematica, > the graph results of an equation in my book. > > Plot[2 x - 3 x^(2/3) + 4, {x, -1, 6}] > > The output graph is correct, except there should be graphing in the > 2nd and 3rd quadrant, and there is none. > > Is there another way to enter this equation into Mathematica to get > the correct graph results? > > Thanks Did you want to see a parabola? Check parentheses. Exponents have higher hierarchy.The branch you indicated and even the other half, lie entirely in the first quadrant. Plot[{2 x + 3 x^(2/3) + 4, 2 x - 3 x^(2/3) + 4, 2 x - 3 x^2/3 + 4}, {x, -2, 4}, GridLines -> Automatic, AspectRatio -> Automatic]