Number of results: 4,615
I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 - 1 y^2 = e^(-x+c) + 1 ...
Wednesday, May 9, 2007 at 12:36pm by Sarah
calc: arc length
Posted by COFFEE on Monday, June 11, 2007 at 11:48pm. find the exact length of this curve: y = ( x^3/6 ) + ( 1/2x ) 1/2 <or= x <or= 1 im looking over my notes, but i'm getting stuck. here's my work so far: A ( 1 , 2/3 ) B ( 1/2 , 49/48 ) y' = [1/6 (3x^2)] + [1/2 (-1x^-2...
Tuesday, June 12, 2007 at 11:11pm by COFFEE
calc: avg value
Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(b-a))*inegral of a to b for: f(x) dx f ave = (1/(2-0))*integral of 0 to 2 for: x^2 ...
Monday, July 2, 2007 at 2:58pm by COFFEE
Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 How do I simplify this so I can take the derivative For Further Reading * Calc - Michael, Sunday, November 25, 2007 at 4:17pm Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 p(-p^2 + 33p + 9) Just distribute the p in. -9(-p^2 + 33p + 9) Find the ...
Sunday, November 25, 2007 at 8:20pm by Ben
I assume you wont have a double side on the adjoining sides. If you do this, you have 102 m of perimeter, to do 3 widths (two ends and center fence), and 2 lengths. Area= lw P= 3w+2L or L= 1/2(102-3w) Area= 1/2 w(102-3w) This is easy in calc, but I assume you are not there ...
Sunday, January 20, 2008 at 5:53pm by bobpursley
Studying for Calc
I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my study habits. any suggestions? i usually work ...
Tuesday, October 7, 2008 at 4:22pm by Elizabeth
Can someone help me with this calc problem? lim as x->0 (tan^3 (2x))/(x^3)
Thursday, January 8, 2009 at 4:22am by Nick
last calc question, i promise!
ALSO ALSO ALSO - on my first calc question (a couple posts down!), i added more to the problem that i forgot, so i need help with that too.
Friday, February 20, 2009 at 12:26am by jane
Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.
Thursday, September 10, 2009 at 8:34pm by muffy
oops! don't know why I put AP Calc, it's actually pre-calc....
Friday, September 18, 2009 at 8:52pm by muffy
Pre Calc Trig Bit
Determine whether the given information resutls in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results. b = 4 c = 6 beta = 20 Ok... I checked my answers in the back of the book and got the first triangle right Gamma = 30.9 alpha = 129.1 a = 9...
Sunday, September 20, 2009 at 8:28pm by Pre Calc Trig Bit
I am having trouble with these two problems for my Calc class. I have tried answering a few times already, but i keep getting it wrong. Help please and thank you. For the limit below, find values of δ that correspond to the ε values. lim_(x->1)(3 + x - 3x^3) = 1...
Monday, September 21, 2009 at 1:05am by Joe
"He drew the picture with the parabola at points (-6,0) (6,0) (0,36)" The point (0,6) is not on the parabola, (0,36) is. The parabola is given as: y(x)=36-x² Given the rectangle is inside the parabola and above (I think) the x-axis, we define the four corners of the ...
Saturday, October 3, 2009 at 11:19am by MathMate
Pre Calc To Reiny - Follow up on Pre-Calc Answer
Pre-Calc - Follow-up for Reiny - MUFFY, Saturday, October 3, 2009 at 10:27pm I wasn't sure if you would notice my question since it is so much later so I re-sent this as a new question. Please let me know if I shouldn't do that. I understand how you got a and b, but I am ...
Saturday, October 3, 2009 at 10:47pm by MUFFY
I have no idea how to do this problem I thought you would have to do something with the diagonals but not sure... The parallel sides of a trapezoid are 4 and 10 centimeters long and the oblique sides are 8 and 12 centimeters long. Fi9nd the angles and the area of the trapezoid
Monday, October 5, 2009 at 1:43pm by Pre Calc
I already asked this question and had some help, but I am still confused on a piece of it. I'm not sure what differentiate is. I understand how you got a and b, but I am confused with c. What is differentiate and how did you get the equation dA/dx = 72 - 6x^2 Question: Here I ...
Monday, October 5, 2009 at 9:01pm by MUFFY
I should have noticed the "Pre Calc" in your title. You are not expected to know what "differentiate" means in that case. So you are with me as far as the formula for the area is, right ? It was A(x) = 36x - x^3 Let's graph this. since the right side factors into A(x) = x(x-6...
Monday, October 5, 2009 at 9:01pm by Reiny
OOPS, I meant Pre-Calc not ap Calc sorry
Saturday, October 10, 2009 at 2:45pm by MUFFY
use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec ( - pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of twenty degrees which isn't on the unit circle...
Friday, November 13, 2009 at 2:40pm by Pre Calc
how did you go from the first line to the next in these lines sec(2PI +Pi/18)cos(37PI/18) sec(37pi/18)cos(37PI/18) 1/cos * cos= 1
Friday, November 13, 2009 at 2:40pm by Pre Calc