Bucket's Questions

[fredrick]

You've got two main conditions that need to be satisfied (the intersection of these two):

1)

2)

The second one is a bit more complicated:

Either (i) or (ii) are acceptable domains (i.e: the union of these domains constitute the 2nd condition)

i) if , then , hence:

ii) if , then , hence:

So, the maximal domain is the intersection of:

1) , and

2) the union of and

So you should get all real values excluding the region

or you can sketch the graph and pick the values above the x-axis

[Collin Li]

Same thing. You're solving for the same numbers essentially. This is an analytical approach as opposed to a graphical approach.

[rowshan]

Coblin, howd you go from here

You've got two main conditions that need to be satisfied (the intersection of these two):

Either (i) or (ii) are acceptable domains (i.e: the union of these domains constitute the 2nd condition)

i) if , then , hence:

ii) if , then , hence:

So, the maximal domain is the intersection of:

2) the union of and

So you should get all real values excluding the region

to here?

[Collin Li]

Where to where?

That should be written as R\(-2,3]. I said it in words.

can be simplified by multiplying both sides by . However, it's not that simple for an inequality. If we multiply by a negative number, it changes the sign, which is why I have explored both cases.

[cara.mel]

Three threads.
You weren't attacking brendan and coblin, you were attacking my post alone. You didn't answer my question and used it just to mock me (possibly you don't have an answer to it, you seem incapable of explaining your contention)

Bucket: I can't fight with him elsewhere as he has blocked all methods of private correspondance. Quite useful when you borrow something and NEED TO GIVE IT BACK.

[rowshan]

yeah i read your answer properly coblin thanks a shit load =D
just a thought...how come we wernt taught this inequality stuff in earlier years?

[lacoste]

CHOCORATE ICED-CREAM LINKING TO AFRICAN CHILD ?~!~ NEW LEVEL ATTACK

you pisser!! made me laugh LAUGH OUT LOUD,,, reminds me of pokemon

[bucket]

Three threads.
You weren't attacking brendan and coblin, you were attacking my post alone. You didn't answer my question and used it just to mock me (possibly you don't have an answer to it, you seem incapable of explaining your contention)

Bucket: I can't fight with him elsewhere as he has blocked all methods of private correspondance. Quite useful when you borrow something and NEED TO GIVE IT BACK.

...get out of my question thread =_=

[vce01]

Yup, I was just doing one then!

Let . Find the equation of the tangent to f(x) that passes through the origin.

can someone explain how to do this? thanks

[onlyfknhuman]

what does it mean by passes through the origin? i thougth that meant passing through (0,0).

[Collin Li]

Yup, I was just doing one then!

Let . Find the equation of the tangent to f(x) that passes through the origin.

can someone explain how to do this? thanks

We are looking for a tangent: , which passes through the origin, .

Therefore:



What else do we know? At the point when the tangent touches the curve, :

1)

2)

Substituting this into: at











Substituting this into equation 2:



Therefore, the tangent is

[onlyfknhuman]

ah fuck im such a retard lol

so pro coblin

[Collin Li]

ah fuck im such a retard lol

so pro coblin

It's a sort of difficult question. Always think of these kind of questions as a quest to assemble the pieces of information you have to find what you want.

[vce01]

Yup, I was just doing one then!

Let . Find the equation of the tangent to f(x) that passes through the origin.

can someone explain how to do this? thanks

We are looking for a tangent: , which passes through the origin, .

Therefore:



What else do we know? At the point when the tangent touches the curve, :

1)

2)

Substituting this into: at











Substituting this into equation 2:



Therefore, the tangent is

awesome, thanks

[bucket]

This is from 2007 exam 1, i don't know why I have trouble with this =_=
Solve for
and

Let Find the smallest possible value of x of which g(x) is a maximum.