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Forums - General Discussion - Need Math help; PM if you can help

SaviorX said:
OK
Determne tthe following about the graph of the equation: y= 8/x^3 - 6/x
Is the graph symmetric with respect to: the x-axis, the y-axis, or the origin
Find all vertical/horizontal asymptotes
Find the x-coordinates of each point at which y has a relative maximum or minimum'
Find the x-coordinate of each point of inflection

oh I had an exam on this back in June (It was in the Maths Core 2 module) , I got an A in it

BUT it was 6 months ago & now my brain is full of trig, trig functions, vectors  & diffrentiating sec, cot & all that rubbish that I'll never need in life.

Do what I do if its homework, COPY OFF PEOPLE!

And then revise like crazy in the week before the exam!



All hail the KING, Andrespetmonkey

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Wait until Calculus 4. Bernoulli has been dead for over 200 years, yet he is still able to be a pain in many people's side.



Aaah Calculus. One of the reasons I switched from Computer Science to Software Engineering. After Calculus I vowed never to do math on my own again.



I am the Playstation Avenger.

   

2 words: graphing calculator. Also, learn how to do calculus, one person solving your homework for you won't do anything. Your book should have a similar example earlier on that you haven't recognized/remembered. They just build sequentially. not too complicated



- Is the graph symmetric with respect to: the x-axis, the y-axis, or the origin

For y axis, determine if f(x) equal to f(-x). For the origin, determine if -f(x) = f(x). For the x axis, determine if each value of x gives pairs of values of y above and below the x axis by the same magnitude.

- Find all vertical/horizontal asymptotes

Vertical: Are there any values of x which would make the function undefined? Or, if it was a single fraction, any values that would make the denominator zero?
Horizontal: Determine the limits as x->infinity or minus infinity.

- Find the x-coordinates of each point at which y has a relative maximum or minimum'
- Find the x-coordinate of each point of inflection

Find f'(x) and f''(x). Where f'(x)=0 it is a maximum or minimum, then use f''(x) for that value to determine its nature.