Simple Algebra Problem:

[bk12321 10+ year member]

yea you're right, brain fart. And where's the name //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

its cool man, i did that stuff pretty fast so I figured I just ****ed up somewhere

 

[dleccord 5,000+ posts]

wait the domain i get it now but how do you figure range at any given function? whats the general question to ask when figuring out the range? or is there a way to solve it?

 

[dragnix 5,000+ posts]

wait the domain i get it now but how do you figure range at any given function? whats the general question to ask when figuring out the range? or is there a way to solve it?

range is basically the highest and lowest the number will go on the y-axis, it's dependent on X(which is the domain) also.

 

[dleccord 5,000+ posts]

alrite so riddle me this, once i find the domain, i can use its highest and lowest number and plug it into the function and will that give me the range?

 

[bk12321 10+ year member]

wait the domain i get it now but how do you figure range at any given function? whats the general question to ask when figuring out the range? or is there a way to solve it?

you plug in (ideally) all values of x, and every value of the function that pops out is the range. fortunately for this problem, we can just plug in the 2 limits of x that we found (0 and 1) into the formula and it gives us the answers.

range = [0,1] which means, if we plug in ANY value of x between 0 and 1 (because those asre the only values it can have without making the function not work), it will give us a number somewhere between 0

you can say that y is the dependant variable and x is INdependant, because you have to find the values of x that will work, but once you do, you can just plug them in and solve the function and it will give you the range values (meaning you dont have to find them like you did with x because y is dependant upon whatever x is).

 

[dragnix 5,000+ posts]

you plug in (ideally) all values of x, and every value of the function that pops out is the range. fortunately for this problem, we can just plug in the 2 limits of x that we found (0 and 1) into the formula and it gives us the answers.
range = [0,1] which means, if we plug in ANY value of x between 0 and 1 (because those asre the only values it can have without making the function not work), it will give us a number somewhere between 0

you can say that y is the dependant variable and x is INdependant, because you have to find the values of x that will work, but once you do, you can just plug them in and solve the function and it will give you the range values (meaning you dont have to find them like you did with x because y is dependant upon whatever x is).

exactly, so names?

 

[kballa422 10+ year member]

alrite so riddle me this, once i find the domain, i can use its highest and lowest number and plug it into the function and will that give me the range?

A lot of times that is the case, but sometimes when dealing with functions of higher degrees and whatnot, you will get a greater/lesser value for Y with an X value somewhere in the middle of the domain.

Think of a parabola, like the function x^2....it is U shaped. If the domain is [-4,4] and you plug in those numbers, you will get the range of 16 to 16, well that doesnt make sense. Plugging in 0 actually gives you the lowest possible value for Y.

Come on man we've been more than helpful and we will keep helping....IF WE GET THOSE NAMES!! lol

 

[dragnix 5,000+ posts]

just remember domain=x-axis and range=y-axis, it makes it easier for you. Worse part is it gets even more confusing as you go higher up in math. Domain also means any number on the x-axis that will not make the equation becomes undefined.

I hate my calculus class //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

I guess an example would be f(x)=1/x. Domain would be (negative infinity, 0)U(0, positive infinity) and range would be (0,1).

Very simplifed example, but it makes it easier to see

 

[dleccord 5,000+ posts]

alrite thanks yall... gotta go to class cuz i got exam.

 

[bk12321 10+ year member]

alrite so riddle me this, once i find the domain, i can use its highest and lowest number and plug it into the function and will that give me the range?

with simple functions, yes, but once you start getting to complicated functions like limits with x --> infinity, that will start becoming not true

but basically yes that will work

 

[bk12321 10+ year member]

just remember domain=x-axis and range=y-axis, it makes it easier for you. Worse part is it gets even more confusing as you go higher up in math.
I hate my calculus class //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

calc 1?????

 

[kballa422 10+ year member]

alrite thanks yall... gotta go to class cuz i got exam.

I'm going to be thoroughly upset with you if we do not get those names.

 

[kballa422 10+ year member]

just remember domain=x-axis and range=y-axis, it makes it easier for you. Worse part is it gets even more confusing as you go higher up in math.
I hate my calculus class //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

lol some of it's hard for me to remember, I took it as a junior in HS and passed the AP. Math is probably my strong suit, along with science, I just really don't like it, lol.

 

[dragnix 5,000+ posts]

calc 1?????

yes //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif, i have 2,3,and standard derivative to go

I'm going to be thoroughly upset with you if we do not get those names.

//content.invisioncic.com/y282845/emoticons/word.gif.64b12e39f936af3b4fff38a1c0bd0244.gif

the bastard //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[bk12321 10+ year member]

lol some of it's hard for me to remember, I took it as a junior in HS and passed the AP. Math is probably my strong suit, along with science, I just really don't like it, lol.

This sounds retarded... but with each math class that I take, I find that I like math more and more...

I used to hate it back in the algebra/pre cal/trig days, but now that im past calc II and taking differential equations, I kinda like it sometimes.