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znimon
 3 years ago
How do I find the domain of this function?
znimon
 3 years ago
How do I find the domain of this function?

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znimon
 3 years ago
Best ResponseYou've already chosen the best response.1\[g(x) \sqrt{x^2  3x  40}\]

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1I have \[\sqrt{(x8)(x+5)} \]

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1The original problem is at the top.

Yahoo!
 3 years ago
Best ResponseYou've already chosen the best response.0Draw a number line and see for it

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1I don't know what x can't be though

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1I know the answer but I don't know how to get the answer.

Yahoo!
 3 years ago
Best ResponseYou've already chosen the best response.0(infinity , 5] U [8 , infinity)

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1yeah but how do I find that?

Yahoo!
 3 years ago
Best ResponseYou've already chosen the best response.0just do trial and error method...)

Yahoo!
 3 years ago
Best ResponseYou've already chosen the best response.0luk for the vlue of x which satisfies this...

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1There must be a logical way to find the answer, right?

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2(x8)(x+5) >= 0 its a parabola, right ?

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1I could input it into my graphing calculator but other wise I don't know how to tell if its a parabola or not.

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2y = ax^2 + bx + c is a parabola

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2any quadratic function gives a parabola graph

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2can you find the x intercepts ?

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2once you find xintercepts, you would know where the parabola dips into x axis (goes negative)

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2dw:1346519548989:dw

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1Oh ya that would be the point at which the g(x) function is 0, so its x  8 = 0, x = 8, x+ 5 = 0, x=5, and since its a parabola the graph only passes through zero twice. Nice dude, so the domain is (infinity, 5] U [8, +infinity]

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2yeah nice you got it :)

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1Awesome, thanks again. Is there a way I could recognize any graph's shape or at least some and would you recommend memorizing those?

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2if the degree is 2, then its a parabola

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2finding domains for other polynomials is bit tricky... as they may dip into xaxis multiple times

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2do you knw sketching polynomilas (end behiavior thingy )

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2end behavior helps you sketch ANY polynomial freehand

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1Thanks dude, I'll look it up

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2process is basically : 1) find x intercepts 2) using endbehavior sketch the graph by hand

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2its easy concept and worth learning... im sure you wil get hang of it in few minutes....... good luck :)

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1why is it that a polynomial with a degree of two is a parabola?

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2uhh il have to think...... idk exactly... i think it has something to do with local maximum/minimum + increasing/decreasing thingy. we need to turn to calculus for proper understanding. im also learning... . so im no good for answering this :(

ganeshie8
 3 years ago
Best ResponseYou've already chosen the best response.2@mukushla @eliassaab @experimentX

znimon
 3 years ago
Best ResponseYou've already chosen the best response.1Oh, I have enough to learn for now so it doesn't matter to me. I bet I wouldn't understand the explanation if it involves terms I've never had before haha.
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