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anonymous
 one year ago
Please help with this precal
questions in the attachment.
anonymous
 one year ago
Please help with this precal questions in the attachment.

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***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2do u know the meaning of using [ ] or () brackets ?

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2well ... then ur 1st Question ask for a function ( which i will denote by f(x) ) which should be greater than or equal to 0 but lesser than + infinity ..... usually functions with square roots belongs to this type

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2\[f(x) = \sqrt{x}\] this is a very simple example

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2u cant find the square root of \[\sqrt{3}\] or any other negative number.... got it ?

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2the second one says... a function which is greater than  infinity and lesser than + infinity... usually ...almost any linear function satisfy this

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2\[f(x) = x + 8 \]\[f(x) = 5x + 10 \]....like any u like...

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2these functions can take either negative or positive values... no harm happens :)

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2now for the last one... its the same as the second one ..but it cant be equal to zero...usually a function with this range means that the function is a fraction ...like the below one

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2\[f(x) = \frac{ 5x + 8 }{ x}\]

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2if u substitute 0 in the above one...u wont be able to tell what will be the answer... because a number divide by zero could be either + infinity or  infinity

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2soo... in a fraction the denominator cant be zero... any function with a fraction where the denominator will be 0 when x is 0 will be ur answer for the third and last of ur first question :)

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2now... do u want help in the 2nd one too ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes please. Thank you for helping me with the first question! :)

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2u r welcome :) lets c... the 2nd one

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2they say the original price is "x" and the price after you apply the coupon is f(x) ...... what happens when u applied the coupon is.... the cut off 25 dollars ..... so if the price of ur dress is "x" ...after u apply the coupon ..the price is " x 25 " ...because they cut off 25$

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2so... f(X) = X 25 ...got it ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay I understand that

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2now lets consider g(x) ..... g(x) is the price of dress withe the 20% discount applied.... a 20% discount means that u can buy the dress less than 20% of the original price if the original price is "x" then 20% of "x" is (20/100)x then g(x) = x  (20/100)x got it ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes that makes sense

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2and finally .... ( f o g )(x) means f( g (x) )...where u have to substituent g(x) instead of "x" in f(x) therefor (f o g)(x) = g(x)  25 = x  (20/100)x  25

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2in the same way (g o f)(x) means g ( f(x) ) where u have to substitute "f(x)" instead of "x" in "g(x)" therefor (g o f)(x) = f(x)  (20/100)f(x) = x  25  [ (20/100)( x 25) ]

***[ISURU]***
 one year ago
Best ResponseYou've already chosen the best response.2i hope u understand it :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Those two I was really confused on, but I understand them now :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you sooo much!! I really appreciate it! :)
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