Math Tutoring --- It's here!

[Rebdragon]

Hello, I need help once again. This time I need help solving rational expressions.

 

 

 

1) x/1 + 1/x = 13/6

 

 

 

2) 1/x + 1/x+2 = 5/12

 

 

 

I have to solve for x in both cases, but I always get a trinomial that can't be factored.

 

1) 3/2 and 2/3

 

 

 

For this one, you can factor it down. If you did it right, you should get ti 6x^2-13x+6. (multiply both sides by 6x, move the 13x to the left side). That can be factored, and with the given answers I hope you can find out how :P .

 

 

 

2) -19/24

 

 

 

Just add the 1/x's together (to get 2/x), move the 2 to the right side, get the fraction -19/12, and cross multiply.

 

 

 

And chocobodude, there's nothing to solve for there. It's not a math problem, just a number.

 

 

 

I'm guessing your friend was thinking of the fact that that number has an infinitely long, non-repeating decimal sequence, so one can't really write the answer down in decimal form. Nonethless, there's not any point in going to decimal form- the answer's right there.

[Grizzlycomet]

Dude, I was in math class yesterday, and my friend bet my other friend $1 he wouldn't be able to solve a math problem fully. He was right. The question was:

 

 

 

22/7

 

 

 

Can you fully solve? :wink:

 

 

 

This page makes a good attempt, but noone can "solve" it fully :)

[IGoddessI]

What a wonderful thing to do for people!

 

 

 

If you need any hand with standard deviation, other statistical things and stuff like that give us a yell.

 

 

 

I work with statistic bull crap too often, blegh.

 

 

 

I just finished a research report on the relationship and correlation similarities between perceived stress and life satisfaction levels.

 

 

 

(CronbachÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢s ÃÆýÃâñ exceeds .8 in both circumstances, thus demonstrating that internal consistency is relevant for anyone who is interested in the final results)

 

 

 

Fun. NOT.

[Chocobodude0]

Hello, I need help once again. This time I need help solving rational expressions.

 

 

 

1) x/1 + 1/x = 13/6

 

 

 

2) 1/x + 1/x+2 = 5/12

 

 

 

I have to solve for x in both cases, but I always get a trinomial that can't be factored.

 

1) 3/2 and 2/3

 

 

 

For this one, you can factor it down. If you did it right, you should get ti 6x^2-13x+6. (multiply both sides by 6x, move the 13x to the left side). That can be factored, and with the given answers I hope you can find out how :P .

 

 

 

2) -19/24

 

 

 

Just add the 1/x's together (to get 2/x), move the 2 to the right side, get the fraction -19/12, and cross multiply.

 

 

 

And chocobodude, there's nothing to solve for there. It's not a math problem, just a number.

 

 

 

I'm guessing your friend was thinking of the fact that that number has an infinitely long, non-repeating decimal sequence, so one can't really write the answer down in decimal form. Nonethless, there's not any point in going to decimal form- the answer's right there.

 

 

 

I didn't just mean that as plopping a fraction there and calling it a problem. I'm finishing up the Algebra 1 course (I'm only in eighth grade) and in a division problem, instead of using the "dot line dot" symbol, they just show it as a fraction. That's what I'm used to. But yeah, you're right, it's irrational. It's kinda funny seeing people try to solve it on a piece of paper or calculator, lol. :wink:

[LordSoultar]

Dude, I was in math class yesterday, and my friend bet my other friend $1 he wouldn't be able to solve a math problem fully. He was right. The question was:

 

 

 

22/7

 

 

 

Can you fully solve? :wink:

 

 

 

This page makes a good attempt, but noone can "solve" it fully :)

 

Too bad that's pi and not 22/7, which is 3.142857.... And there is no need to "solve" 22/7 at all, it's an expression instead of an equation.

 

 

 

But yeah, you're right, it's irrational.

 

No, it's not. Since it can be written as a fraction it is rational.

[Rebdragon]

What a wonderful thing to do for people!

 

 

 

If you need any hand with standard deviation, CronbachÃÆââââ¬Å¡Ã¬Ã¢ââ¬Å¾Ã¢s ÃÆýÃâñ and stuff like that give us a yell.

 

 

 

I work with statistic bull crap too often, blegh.

 

I took statistics last year... I've totally forgotten everything >_<.

 

 

 

Kinda sucks, seeing as how I'm taking the Mathematics Level II SAT, and there's a decent amount of statistics stuff on it -.- . So should've taken it last year...

[TheChamp]

Hello, I need help once again. This time I need help solving rational expressions.

 

 

 

1) x/1 + 1/x = 13/6

 

 

 

2) 1/x + 1/x+2 = 5/12

 

 

 

I have to solve for x in both cases, but I always get a trinomial that can't be factored.

 

1) 3/2 and 2/3

 

 

 

For this one, you can factor it down. If you did it right, you should get ti 6x^2-13x+6. (multiply both sides by 6x, move the 13x to the left side). That can be factored, and with the given answers I hope you can find out how :P .

 

 

 

2) -19/24

 

 

 

Just add the 1/x's together (to get 2/x), move the 2 to the right side, get the fraction -19/12, and cross multiply.

 

 

 

And chocobodude, there's nothing to solve for there. It's not a math problem, just a number.

 

 

 

I'm guessing your friend was thinking of the fact that that number has an infinitely long, non-repeating decimal sequence, so one can't really write the answer down in decimal form. Nonethless, there's not any point in going to decimal form- the answer's right there.

 

 

 

I see what I did wrong now, for the first one I forgot to cancel out the 6 so I multiplied 13 and 6x.

 

 

 

But the second one is actually 1/x + 1/(x+2) = 5/12. The (x+2) is actually a group, so I can't add the 1/x's. My bad for not putting it in parenthesis.

[Stilev]

well here is 1 of 3 my homework problems for math analysis (basicly trig and Calc AB in one class only for juniors)

 

 

 

f(x) = (2x)\(x^2-1)

 

 

 

find:

 

domain

 

range

 

x-intercept(s)

 

y-intercepts(s)

 

symmetry

 

 

 

vertical asymptote

 

horizontal asymptote

 

 

 

first derivative

 

f(x) increases

 

f(x) decreases

 

relative maximum(s)

 

relatives mimumum(s)

 

 

 

second derivate

 

f(x) is concave up

 

f(x) is concave down

 

Points(s) of inflection

 

 

 

then graph it, but i think i can that

 

 

 

if someone could do this be a big help :

[LordSoultar]

Hello, I need help once again. This time I need help solving rational expressions.

 

 

 

1) x/1 + 1/x = 13/6

 

 

 

2) 1/x + 1/x+2 = 5/12

 

 

 

I have to solve for x in both cases, but I always get a trinomial that can't be factored.

 

1) 3/2 and 2/3

 

 

 

For this one, you can factor it down. If you did it right, you should get ti 6x^2-13x+6. (multiply both sides by 6x, move the 13x to the left side). That can be factored, and with the given answers I hope you can find out how :P .

 

 

 

2) -19/24

 

 

 

Just add the 1/x's together (to get 2/x), move the 2 to the right side, get the fraction -19/12, and cross multiply.

 

 

 

And chocobodude, there's nothing to solve for there. It's not a math problem, just a number.

 

 

 

I'm guessing your friend was thinking of the fact that that number has an infinitely long, non-repeating decimal sequence, so one can't really write the answer down in decimal form. Nonethless, there's not any point in going to decimal form- the answer's right there.

 

 

 

I see what I did wrong now, for the first one I forgot to cancel out the 6 so I multiplied 13 and 6x.

 

 

 

But the second one is actually 1/x + 1/(x+2) = 5/12. The (x+2) is actually a group, so I can't add the 1/x's. My bad for not putting it in parenthesis.

 

x = {-6/5, 4}

[kido14]

well here is 1 of 3 my homework problems for math analysis (basicly trig and Calc AB in one class only for juniors)

 

 

 

f(x) = (2x)\(x^2-1)

 

 

 

find:

 

domain

 

Set the denominator = 0 and find what values x exists (not = 0)

 

range

 

x-intercept(s)

 

Plug in 0 for y and solve for x

 

y-intercepts(s)

 

Plug in 0 for x and solve for y

 

symmetry

 

 

 

vertical asymptote

 

Set denominator of derivative = 0

 

horizontal asymptote

 

Set numberator of derivative = 0

 

 

 

first derivative

 

f(x) increases

 

Find where f'(x) is positive

 

f(x) decreases

 

Find where f'(x) is negative

 

relative maximum(s)

 

Find where f'(x) goes from positive to negative

 

relatives mimumum(s)

 

Find where f'(x) goes from negative to positive

 

second derivate

 

f(x) is concave up

 

Find where f''(x) is positive

 

f(x) is concave down

 

Find where f''(x) is negative

 

Points(s) of inflection

 

Find where f''(x) is = 0

 

 

 

then graph it, but i think i can that

 

 

 

if someone could do this be a big help :

 

 

 

All of that is just off the top of my head, so you should definitely double check what I said when you come up with the answers. Do you have a TI83+ calculator? If so I can tell you how to graph f(x) and its derivatives and do other useful things like that if you don't already. Hope I helped.