- #1
Matty R
- 83
- 0
Hello again.
I'm having more trouble with my homewrork, but this one really isn't fair. We haven't done the work in class, and as far as I can tell it isn't on the syllabus, but we're still expected to do it.
http://img17.imageshack.us/img17/4379/questions7.jpg
http://img23.imageshack.us/img23/122/equation7.jpg
http://img219.imageshack.us/img219/9325/attempt7a.jpg http://img23.imageshack.us/img23/4422/attempt7b.jpg http://img23.imageshack.us/img23/7175/attempt7c.jpg
For part c, I have no idea where to go. From the googling I've done, I'm supposed to find a value of x where f(x)=0. I would have thought that the point of part b was to get a value of of x to make f(x)=0, so the trial-and-error bit would be removed.
I used some software called Mathematica to plot the graph of this function between x=-4 and 4, and the only point where it crosses the x-axis is somewhere between x=2.3 and 2.4.
I plotted between those points because later on I have to sketch the graph and plot the points when x=0 to x=3, and only those points.
I originally made a mistake where I have -250 - 16. I added 16 and got -234, then came up with this :
http://img23.imageshack.us/img23/5506/wrongh.jpg
This is my third day on this question, and it's driving me nuts.
Does anyone have any hints/tips or know what I'm supposed to do?
I'm having more trouble with my homewrork, but this one really isn't fair. We haven't done the work in class, and as far as I can tell it isn't on the syllabus, but we're still expected to do it.
Homework Statement
http://img17.imageshack.us/img17/4379/questions7.jpg
Homework Equations
http://img23.imageshack.us/img23/122/equation7.jpg
The Attempt at a Solution
http://img219.imageshack.us/img219/9325/attempt7a.jpg http://img23.imageshack.us/img23/4422/attempt7b.jpg http://img23.imageshack.us/img23/7175/attempt7c.jpg
For part c, I have no idea where to go. From the googling I've done, I'm supposed to find a value of x where f(x)=0. I would have thought that the point of part b was to get a value of of x to make f(x)=0, so the trial-and-error bit would be removed.
I used some software called Mathematica to plot the graph of this function between x=-4 and 4, and the only point where it crosses the x-axis is somewhere between x=2.3 and 2.4.
I plotted between those points because later on I have to sketch the graph and plot the points when x=0 to x=3, and only those points.
I originally made a mistake where I have -250 - 16. I added 16 and got -234, then came up with this :
http://img23.imageshack.us/img23/5506/wrongh.jpg
This is my third day on this question, and it's driving me nuts.
Does anyone have any hints/tips or know what I'm supposed to do?
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