Friday

April 18, 2014

April 18, 2014

Number of results: 84,678

**Pre-Calc**

Can you show me how to find the rectangular equation of r=2costheta + 3 sin theta All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you
*Monday, October 3, 2011 at 6:33pm by Leah*

**pre-calc**

oops! don't know why I put AP Calc, it's actually pre-calc....
*Friday, September 18, 2009 at 8:52pm by muffy*

**ap calc**

OOPS, I meant Pre-Calc not ap Calc sorry
*Saturday, October 10, 2009 at 2:45pm by MUFFY*

**MATH!**

Well i can't seem to figure out the intersection on my calc. please help.
*Monday, October 19, 2009 at 4:09pm by please help(:*

**Calc.. 6 minutes left last question please!!**

please
*Friday, January 17, 2014 at 11:34am by kaa*

**Calc**

The total area enclosed by the graphs of y=10x^2-x^3+x y=x^2+19x Please Please help me solve this. I have done it amny times, but getting it wrong
*Tuesday, January 25, 2011 at 10:43pm by John*

**Calc**

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*

**MATHS**

A CONE WAS CONSTRACTED FROM PLASTIC, HAVE A HEIGHT OF 20cm (PART C). THE LID IS MADE UP OF HEMISPHERE HAVE RADIUS 0F 5cm (PART A) AND PYRAMID HAVE VOLUME OF 81,667cm³. THE LID FITS EXACTLY OVER THE CONE. A) CALC. THE VOL. OF PART A. B) CALC. THE VOL. OF PART C. C) CALC. THE ...
*Monday, August 9, 2010 at 8:16am by MTHOMBENI BAFANA*

**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*

**calc**

oh! ok! thank you! so then m=6 and the equation of the tangent line would be y=6x Thank you!
*Tuesday, September 14, 2010 at 2:41pm by calc*

**Pre-Calc/Calc**

Looks like C to me
*Wednesday, April 17, 2013 at 11:05am by Steve*

**pre-calc HELP PLEASE**

solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0
*Tuesday, April 24, 2012 at 7:01pm by Kimberly*

**calc**

integral (x^2+x-1)/(x+1) dx can you please explain maybe not step by step but not just the answer please thanks
*Thursday, January 24, 2013 at 6:15am by kmac*

**Pre Calc**

please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 2 2 5 7 6 7
*Monday, December 7, 2009 at 6:27pm by Jo*

**pre-calc help please !**

thank you !!!!
*Sunday, December 2, 2012 at 9:53pm by Monica*

**pre-calc help please !**

welcome!
*Sunday, December 2, 2012 at 9:53pm by Reiny*

**pre calc**

please help!!!!
*Friday, September 13, 2013 at 6:05pm by charlotte*

**calc**

construct an isoceles triangle with an area of 100. what is the length of the base of the triangle which has the smallest perimeter? Prepping for a test, explanations please
*Thursday, December 9, 2010 at 6:43pm by C-help please asap*

**Pre Calc**

Simplify (n+1)!/(n-1)! Help please?
*Sunday, March 15, 2009 at 9:24pm by MW*

**calc**

Sorry Ignore
*Thursday, December 9, 2010 at 6:43pm by C-help please asap*

**Pre-Calc-Please check**

Yes!
*Tuesday, January 10, 2012 at 11:09am by drwls*

**Pre-Calc Help!!!!!!!!!!!!!!!!1**

can someone help me please????
*Sunday, April 15, 2012 at 9:48pm by John*

**calc Urgent please**

idk
*Tuesday, May 11, 2010 at 11:20pm by bob*

**calc Urgent please**

idk
*Tuesday, May 11, 2010 at 11:20pm by bob*

**Pre-Calc-please check**

please delete last two lines-that was just my work I calculated- it shouldn't e there actual answer is 243a^5-810a^4b + 1080a^3b^2 -720a^2 b^3 + 240ab^4-32b^5
*Wednesday, January 4, 2012 at 12:54pm by Bethany*

**Pre Calc**

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*

**Pre calc**

Please show your attempt.
*Wednesday, May 14, 2008 at 6:51pm by Damon*

**Calc. Repost- Please Help**

I'm just as confused!
*Wednesday, October 13, 2010 at 12:50am by CMM*

**Algebra II-Please check calc**

1) yes 2) yes
*Wednesday, April 6, 2011 at 11:13am by bobpursley*

**Pre-Calc**

Can someone please answer this?
*Saturday, September 10, 2011 at 2:20pm by Anonymous*

**Pre-Calc-please check**

Thank you for checking
*Wednesday, January 4, 2012 at 12:54pm by Bethany*

**pre-calc**

where did you ge the 7/6?
*Thursday, September 27, 2012 at 10:51pm by Ms. Sue please help!*

**Calc**

find the limit as t approaches x of ((1/t)-(1/9))-(t-9).. help please thank you
*Sunday, February 10, 2013 at 1:10pm by Anonymous*

**calc**

integrate 1/(1+(e^-x)) please provide steps
*Wednesday, May 1, 2013 at 10:13pm by Anonymous*

**Calc **

The linear approximation at x = 0 to f(x) = \sqrt { 3 + 3 x } is y = Please Help!
*Monday, August 5, 2013 at 9:14am by Anonymous*

**Help please!! For pre-calc**

Logx16=-2 how do you solve this?
*Tuesday, December 10, 2013 at 8:47pm by Anonymous *

**calculus (limits)**

lim h>0 sqrt(1+h)-1/h not sure how to factor this; not allowed to use L'Hopital's Rule. (that isn't taught at my school until Calc II & I'm in Calc I).
*Saturday, January 22, 2011 at 2:09pm by John*

**please help; calc**

when you plug it in the original eqn. it doesn't work
*Wednesday, November 12, 2008 at 8:01pm by stephanie*

**Pre Calc**

Please disregard, I found your answer.
*Thursday, September 10, 2009 at 8:34pm by muffy*

**PRE-CALC**

Can you please explain the x-2 and x+1, I'm not sure how you got that.
*Friday, October 16, 2009 at 10:01pm by Muffy*

**Pre calc**

Please finish y+7=6/7x-30/7
*Friday, January 25, 2013 at 12:54am by Joe*

**Math**

Please someone help with my pre calc question!
*Monday, February 11, 2013 at 9:20pm by Anthony *

**Extrema-Calc- Repost**

Not sure how to get started. please help?
*Wednesday, May 15, 2013 at 12:47am by Eric*

**Help please!! For pre-calc**

The answer I think is wrong
*Tuesday, December 10, 2013 at 8:47pm by Anonymous *

**pre calc**

I'm not quite sure what you mean. Can you please elaborate
*Saturday, October 24, 2009 at 3:51pm by Muffy*

**Calc - Please help**

s= integral v(t) s= INT 8t^3 dt= 2t^4+ s(0)
*Sunday, December 19, 2010 at 1:34pm by bobpursley*

**pre-calc**

Do you know how to do any of the requested items? Please post what you can do for checking.
*Saturday, January 22, 2011 at 7:00pm by MathMate*

**calc- please help im so confused**

differentiation & related rates
*Sunday, January 1, 2012 at 4:51pm by lilly *

**Pre-Calc**

cosx/(1+secx) Please help me simplify this expression.
*Thursday, November 1, 2012 at 6:34pm by Gaby*

**calc**

Integrate 1/(ln(x)); f(e^e)=1 please provide step! confused because of f(e^e)!
*Wednesday, May 8, 2013 at 8:54pm by Sunny*

**Pre-Calc - incomplete**

no diagram. more text, please.
*Tuesday, October 1, 2013 at 12:42am by Steve*

**help chem!:/**

a) Calc. PH of 0.010 M HF and 0.030 M KF e) calc. PH Zn(OH)2 in wAter
*Thursday, March 15, 2012 at 9:03pm by ALISON*

**Calc or Pre calc**

I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2
*Wednesday, May 14, 2008 at 9:42pm by jennifer*

**Maths**

You can graph it, if you calc is a graphing calc. graph y=x^2+8x+5, where it crosses the x axis, is the solutions.
*Thursday, September 17, 2009 at 6:00pm by bobpursley*

**Pre Calc (please explain)**

How do you know that it is supposed to have an a in front?
*Sunday, November 15, 2009 at 9:30pm by Bob Dylan*

**calc**

Can someone please show me how to find the integral of sin squared x?
*Sunday, February 27, 2011 at 4:59pm by lo*

**Pre-Calc**

Can you someone please help me with this question??? Simplify cot(x + pi)
*Sunday, May 22, 2011 at 4:16pm by Emily*

**pre-calc **

cos x+sec x=2 if you could please show all work
*Tuesday, November 20, 2012 at 3:15pm by Haley*

**Help please!! For pre-calc**

A negative cant cHange to a positive without doing anything
*Tuesday, December 10, 2013 at 8:47pm by Anonymous *

**Calc help - check rest of answers, please?**

Nevermind, I figured them out! :) Thank you!
*Thursday, December 19, 2013 at 9:25pm by Samantha*

**Calc 3**

can you please explain to me where you got the numbers for T(-1,1,2) I know you did the cross product but I can not seem to get the same numbers as you. Please explain
*Thursday, September 27, 2012 at 8:48pm by Becky*

**Pre-Calc**

Determine the solution. x^2=|x|algebraically I have no idea how to proceed with this. Can you please help?
*Saturday, September 26, 2009 at 12:01pm by MUFFY*

**Math: Pre-Calc**

I don't quite follow the last three lines. Could you please explain?
*Friday, November 6, 2009 at 12:36pm by Angelina*

**Calc**

What is the equation of the tangent line of the one-family of curve x^2 + y^2 = 25 at P(4, 3) ?? help please
*Monday, December 14, 2009 at 9:04am by Janice*

**pre calc**

Simplify- (x^2+2x)/(x^2-x) *I got x(x+2) for the numerator and I couldn't get the denominator, but it was wrong help please
*Tuesday, February 23, 2010 at 11:21pm by Karissa*

**CALC - from Jessica**

Please, keep the same name when posting on Jiskha.
*Saturday, August 13, 2011 at 9:12pm by Ms. Sue*

**Calc..Help Please**

I get the same derivative. You can post your numerical answer for a check if you wish.
*Monday, February 20, 2012 at 6:12pm by MathMate*

**Pre-calc**

Could you possibly elabarate a little on to how you got those numbers please :) thanks you!
*Monday, April 9, 2012 at 1:42pm by Maya*

**Calc help - check rest of answers, please?**

Thank you so much! I'm getting number 7 as .9%, correct?
*Thursday, December 19, 2013 at 9:25pm by Samantha*

**Math**

It is math, i take a pre-calc/calc class. sorry!
*Sunday, September 28, 2008 at 4:49pm by sam*

**Pre-Calc**

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*

**pre calc**

area of triangle XYZ given:side z=11 side x=7 and side y=13 what are the angles and area please? please explain
*Thursday, December 8, 2011 at 5:07pm by jim*

**Calc. Help Please.**

Find the value of the definite integral using sums, not antiderivatives: int= integral sign int((x + 2)/(x^(3/2)),x= 16..25)dx Please help... even just showing me how to get started would be greatly appreciated.
*Tuesday, April 5, 2011 at 7:23pm by CM*

**AP Calc**

PLEASE ANSWER! PLEASEEEE! what is the antiderivative of sin (x + (1/x)) THANK YOU TIMES A MILLION!!!!
*Monday, January 3, 2011 at 6:42am by APpreciative student*

**PRE CALC **

please help me solve this partial-fraction decomposition! 12x-57/(x-3)(x-10)
*Sunday, May 15, 2011 at 11:32pm by esora*

**Pre-Calc-Please check my answer**

I believe you are trying to factor the polynomial. so x^2 -4x+3 (x-1)(x-3) =0 x= 1,3
*Tuesday, September 6, 2011 at 8:12pm by ALISON*

**Pre-Calc**

Please help me with this problem-I'm stuck (x-2)/(x+2) = (x+10)/x I'm not even sure where to start-Thanks for any help you can provide
*Sunday, September 18, 2011 at 1:34pm by Josh*

**Pre-Calc-Please check answer**

Thank you-I see where I made the mistake Funny!! I like that!
*Thursday, December 15, 2011 at 8:44pm by Sandra*

**Pre-Calc-Please check my answer**

Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are 1 ...
*Tuesday, September 6, 2011 at 8:12pm by Sheila*

**Pre Calc**

In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?
*Monday, April 13, 2009 at 9:16pm by MW*

**Pre-Calc-Please check my answer**

You did this about the most difficult way. Consider: x^2-4x-3=0 (x-1)(x-3)=0 x= 1, or 3
*Tuesday, September 6, 2011 at 8:12pm by bobpursley*

**calculous**

I'm in AP calc. We still didnt learn what descartes rule is.. Can you be more explisive please?
*Saturday, November 5, 2011 at 10:28pm by Yoona*

**Math-alg-calc**

x^(-1/7)=(1/2) Please help the example given was x^(-1/7)=(1/5) so that solved x=78,125. but i have no idea what to do thanks!
*Thursday, April 5, 2012 at 7:28pm by Rochelle F*

**Math, Pre Calc**

Given that (+-2) and i are the roots of a 4th degree polynomical, find the equation. Please help! Thank you:)
*Wednesday, September 5, 2012 at 3:21pm by Nikki*

**calc**

I've already helped you twice. Please try some on your own, you obviously need the practice.
*Wednesday, December 19, 2012 at 9:32pm by PhysicsPro*

**Calc.**

Use a linear approximation (or differentials) to estimate the given number. Tan 44 degrees Please help.
*Monday, November 15, 2010 at 10:15pm by Chelsea*

**Pre-Calc**

Can someone show me how to do this please. I am stuck. find a number x such that e^2x – 12e^x =13
*Thursday, December 9, 2010 at 1:16am by Roy*

**Pre-Calc-Please check**

Number three should read p/q = not p/a Thank you for letting me know the first two are correct
*Monday, January 9, 2012 at 8:23pm by Julia*

**Calc 3 PLEASE HELP!!!!**

no you have to use lagrange multipliers to do it and i figured out all five equations but i can not solve any of them
*Thursday, October 4, 2012 at 7:57pm by Becky*

**Pre-calc/Calc**

Looks like D to me. sin u + sin v = 2 sin(½(u+v)) cos(½(u−v))
*Wednesday, April 17, 2013 at 11:12am by Steve*

**Math**

If (a,-3) is a point on the graph of y=x^2+4x, what is the value of a? so far i have -3=x^2+4x i can do the problem on my graphing calc but we can't use a graphing calc on the test so i need to know how to do it by hand. what do i do next?
*Wednesday, January 20, 2010 at 10:29pm by Karen*

**Calc.**

My other questions I didn't understand what e was either. My calculator does not allow me to perform the function that you told me. Please further explain.
*Tuesday, July 15, 2008 at 12:12pm by Derek*

**Pre Calc**

lim x approaches 0 [1/x *((1/(sqrt(1+x))-1)] It will be easier to understand if you write it out.. How would I algebraically do this? (The answer is -1/2) Help please?
*Wednesday, March 18, 2009 at 8:32pm by MW*

**CALC BC**

How do I find the derivative of x^ (1/(x-1)) is it (1/(x-1)) x^[1-(1/(x-1))] * (-1/ (x-1)^2) ?? If not, can you please write out what rule I should use? Thank you very much!
*Saturday, September 18, 2010 at 6:27pm by APpreciate student*

**college calc**

can you please help me with this one problem i am supposed to fine the intercepts of the graph of the equation. 16y^2=120x-225
*Sunday, January 30, 2011 at 11:14pm by bren*

**Pre-Calc-Please check my answer**

x^2 -4x + 3 = 0 factor (x-3)(x-1) = 0 x = 3 or x = 1 or complete the square as you tried x^2 -4 x = -3 note sign change of 3 x^2 - 4 x + 4 = -3 +4 = 1 (x-2)^2 = 1 x = 2 +/- 1 x = 1 or x = 3
*Tuesday, September 6, 2011 at 8:12pm by Damon*

**Calc**

ex: Find the indicated derivative using implicit differentiation. e^x/y^2= 8 + e^y; dy/dx Please I need help and thank you very much!
*Sunday, October 2, 2011 at 8:40pm by Ed*

**Calc Help :(((((**

Find the derivative of the following function showing your work and fully simplifying your answer. Show steps please! Thank you!!!!!! f(x)=(x+3)^3(x-8)^5
*Wednesday, March 12, 2014 at 9:44pm by Kim*

**Calc Help**

q=(1000/p+1)^2 - 1 find q' Please help. Question on review sheet. I will be glad to help you, or critique your work. What do you think the way to solve it is>
*Tuesday, May 1, 2007 at 10:28pm by Evan*

**calc- please help**

given x=2cos(t)+t*sin(t) and y=2sin(t)-t*cost(t), with t:[pi, 2pi] find all critical values. (4 answers)
*Sunday, May 20, 2007 at 10:08pm by Mischa*

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