Mathematics
14 Online
OpenStudy (anonymous):
calculus : find volume of revolution for region bounded by y = sqrt x, y = 0, x = 4, x = 6 , about the line x = 6 (using shell method i think)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (watchmath):
\(\int_4^6 2\pi(6-x)\sqrt{x}\,dx\)
OpenStudy (anonymous):
the book says 0 to 4, must be a mistake
OpenStudy (watchmath):
well if the problem is written exactly what you wrote above the integral should be from x=4 to x=6.
OpenStudy (toxicsugar22):
contrasat can u help me
OpenStudy (toxicsugar22):
please
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
4x^2-6y^2+32x-24y+16=0
give the exact coordinated of an four points
OpenStudy (toxicsugar22):
i will give u a medal
OpenStudy (anonymous):
whats the question
OpenStudy (toxicsugar22):
4x^2-6y^2+32x-24y+16=0
give the exact coordinated of an four points
OpenStudy (anonymous):
coordinated is not a word
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
of an 4 points? thats not proper english grammar
OpenStudy (toxicsugar22):
ok
OpenStudy (toxicsugar22):
can u help me
OpenStudy (anonymous):
please i need better english
OpenStudy (toxicsugar22):
4x^2-6y^2+32x-24y+16=0
give the exact coordinates of any four points
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
on the hyperbola
OpenStudy (anonymous):
ok first change that to a standard hyperbola
OpenStudy (anonymous):
4 ( x^2 - 8x + ? ) - 6 ( y^2 +4 + ? ) + 16 = 0
OpenStudy (toxicsugar22):
ok
OpenStudy (anonymous):
mistake
4 ( x^2 +
8x + ? ) - 6 ( y^2 +4 + ? ) + 16 = 0
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
ok
OpenStudy (anonymous):
4 ( x^2 + 8x + (8/2)^2 - (8/2)^2 ) - 6..
OpenStudy (anonymous):
theres an easier way to do this
OpenStudy (anonymous):
just plug in x = 0, and see what you get for y , then x = 1, etc
OpenStudy (anonymous):
4x^2-6y^2+32x-24y+16=0
so if x = 0, we have 0 - 6y^2 + 0 - 24 y + 16 = 0
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
ok
OpenStudy (anonymous):
then solve that quadratic
OpenStudy (toxicsugar22):
ok so this is the quadractic -6y^2-24y+16=0
OpenStudy (toxicsugar22):
is that right
OpenStudy (anonymous):
yes
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok these are not easy coordinates this way
OpenStudy (toxicsugar22):
can i use foil
OpenStudy (anonymous):
you can use quadratic formula, but this is not an easy approach to find 4 coordinates
OpenStudy (toxicsugar22):
can u help me
OpenStudy (anonymous):
YES!!!!!!!!!!!!!!!!!
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
where is my medal
OpenStudy (toxicsugar22):
i got 92 and 68 but i think i did it wrong can u help me
OpenStudy (anonymous):
where is my medal
OpenStudy (toxicsugar22):
i gave u it
OpenStudy (anonymous):
YAYYYYYYYYYYYYYYYYY!!!!!!
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
can u help me
OpenStudy (toxicsugar22):
do the quadractic
OpenStudy (toxicsugar22):
please
OpenStudy (anonymous):
its pretty bad
OpenStudy (toxicsugar22):
what
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
i get y = funny bananas
OpenStudy (anonymous):
too much work man
OpenStudy (toxicsugar22):
can u help me
OpenStudy (anonymous):
here, lets do it anothe rway
OpenStudy (anonymous):
YYYYYYYYYYYEEEEESSSSSSSS!!!!!
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
can u please help me with the question
OpenStudy (anonymous):
YYYYYYYYYYYYYYYYYYYEEEEEEEEEEEEEEEEEEEEEEEESSSSSSSSSSSSSSSSSSS \[\prime \prime \prime \prime \prime \prime \prime ^{^{^{^{ddd ^{^{^{^{ddd \sqrt[\sqrt[\sqrt[\sqrt[?]{?}]{?}]{?}]{?}}}}}}}}}\]
OpenStudy (toxicsugar22):
are u going to help me or no casue it is rude
OpenStudy (anonymous):
4( x^2 + 8x + (8/2)^2 - (8/2)^2 -
OpenStudy (anonymous):
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
one moment, stand by
OpenStudy (anonymous):
4( x^2 + 8x + (8/2)^2 - (8/2)^2) - 6 ( y^2 + 4y +(4/2)^2 - (4/2)^2 ) + 16 = 0
OpenStudy (toxicsugar22):
ok
OpenStudy (toxicsugar22):
ok
OpenStudy (toxicsugar22):
i dont mean to rush u but can u hurry up
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
im trying my best
OpenStudy (anonymous):
are you girl or boy
OpenStudy (toxicsugar22):
a boy
OpenStudy (anonymous):
4 ( (x + 4)^2 - 4^2 ) - 16 ( (y+2)^2 - 4 ) + 16 = 0 , agreed?
OpenStudy (anonymous):
i completed the square
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
yes
OpenStudy (toxicsugar22):
can u help me now finding the four pointd
OpenStudy (toxicsugar22):
points
OpenStudy (anonymous):
YYYYYYYYYYYYYYYYYYYYEEEEEEEEEEEESSSSSSSSSSSSSSS
OpenStudy (anonymous):
4 ( (x + 4)^2 - 4^2 ) - 16 ( (y+2)^2 - 4 ) + 16 = 0
4 ( x+4)^2 - 4^3 - 16 ( y+2)^2 + 16*4 + 16 = 0
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
ok
OpenStudy (anonymous):
4 ( x + 4) ^2 - 16 ( y+2)^2 = 4^3 -16*4 - 16
OpenStudy (anonymous):
4 ( x+4)^2 - 16 (y+2))^2 = -16
OpenStudy (anonymous):
-(x+4)^2 / 4 + (y+2)^2 / 1 = 1
OpenStudy (anonymous):
now solve for y
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
(y+2)^2 = ( x+4)^2/4 , square root both sides
OpenStudy (anonymous):
so abs (y+2) = abs(x+4)/2
OpenStudy (anonymous):
+ - (y+2) = + - (x + 4)/2
OpenStudy (toxicsugar22):
so what are the points
OpenStudy (toxicsugar22):
u making me cry
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
we're almost there
OpenStudy (toxicsugar22):
what are the points
OpenStudy (toxicsugar22):
please
OpenStudy (anonymous):
i made a mistak,e one sec
OpenStudy (anonymous):
YOURE MAKING ME CRY< lol
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
dont cry, just take a deep breath , drink some water
OpenStudy (toxicsugar22):
ok
OpenStudy (anonymous):
ok, i have to go back and find the mistake one sec
OpenStudy (anonymous):
fresh piece of paper
OpenStudy (toxicsugar22):
ok
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (toxicsugar22):
i postef a new post
OpenStudy (anonymous):
ok
NOOOOOOOOOOOOOOOOOOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
OpenStudy (toxicsugar22):
what
OpenStudy (anonymous):
nevermind
OpenStudy (anonymous):
ok
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
(y+2)^2 /1^2 - (x+4)^2 / 4 = 1
OpenStudy (anonymous):
(y+2)^2 = 1 + (x+4)^2 /4
OpenStudy (anonymous):
y = + - sqrt ( 1 + (x+4)^2/4)