Wednesday

April 16, 2014

April 16, 2014

Number of results: 114,315

**Calculus. Please help! :)**

You're very welcome! Please do rework the problem and understand every step. It may help your exams! If there is any doubt, post again!
*Wednesday, August 10, 2011 at 3:05pm by MathMate*

**Calculus (please help)**

Thank you Count-Iblis, I did not notice the square in the denominator. So Carmen, please do not take into account my solution above.
*Tuesday, September 20, 2011 at 9:56pm by MathMate*

**Calculus (Please Check my answers)**

thank you so much MathMate .
*Sunday, March 13, 2011 at 6:40pm by anon*

**Calculus - please check my work**

All correct, well done!
*Monday, June 18, 2012 at 5:48pm by MathMate*

**Calculus - please check my work**

All correct!
*Monday, June 18, 2012 at 5:55pm by MathMate*

**need some help!!!**

From your previous post, which MathMate answered. f(x) = 12x/(sinx + cosx) for -pi calculus-correction - MathMate, Thursday, February 24, 2011 at 9:45pm The required problem was f(-π) = 12(-π)/(0+(-1)) = 12π 12pi is the answer. You have said that this is not the...
*Thursday, February 24, 2011 at 10:54pm by Helper*

**Calculus - MathMate Please help**

Thank You. I think i got the idea. i will try to solve it.
*Monday, November 29, 2010 at 2:44am by K*

**calculus**

What is -17? It seems to form part of the answer. Please elaborate.
*Tuesday, August 4, 2009 at 10:26am by MathMate*

**Calculus**

| i j k | | 4 2 -3 | | 2 -3 1 | = [-7,-10,-16]/9√5 like this? please check if it's correct, thanks MathMate
*Thursday, May 24, 2012 at 10:51pm by j*

**calculus (please help steve)**

Typo: Y2(x)=-5.5+√(5.5^2-x^2) Subsequent lines are not affected.
*Thursday, July 25, 2013 at 6:17pm by MathMate*

**calculus--please help!!**

Hint: by definition H(x)=(fog)(x) = f(g(x)) what would be the appropriate functions f(x) and g(x) such that f(g(x))=(3x+2)^6?
*Tuesday, January 8, 2013 at 10:01pm by MathMate*

**Calculus**

Hi Bosnian, I haven't had an exam for a long time. Do students get to use Wolfram or Google during their exams? MathMate
*Wednesday, March 21, 2012 at 12:32pm by MathMate*

**Calculus: for mathmate**

Yes, think of f(x)=0*x + 13
*Tuesday, February 8, 2011 at 10:24am by MathMate*

**calculus**

Could you please be more precise with your question, for example, what is the independent variable? Is g a function of a? Why would da appear in the denominator?
*Wednesday, August 12, 2009 at 3:11pm by MathMate*

**CALCULUS WXMAXIMA HELP PLEASE!**

Please confirm if the expressions are fully parenthesized. As they are, 100493/40000x means (100493/40000)*x. Check by graphing on a calculator or with wxMaxima that there is a region formed by the three curves.
*Friday, March 4, 2011 at 6:42pm by MathMate*

**Algebra 2**

You have titled the post "algebra 2". Does that mean that you have done calculus, or should the solution be without calculus? We usually solve maximization problems by linear programming or calculus. However, this problem can also be solved by tabulation without using calculus...
*Thursday, February 24, 2011 at 10:33pm by MathMate*

**CALCULUS WXMAXIMA HELP PLEASE!**

You still have not confirmed if x is in the numerator or denominator. Here's a plot to help you get started. wxplot2d([y1(x),y2(x),y3(x)], [x,-2,5], [y,-3,6])
*Friday, March 4, 2011 at 6:42pm by MathMate*

**CALCULUS WXMAXIMA HELP PLEASE!**

You'd have to replace y1(x)... with the three expressions for y. Be sure to insert sufficient parentheses to define the functions correctly.
*Friday, March 4, 2011 at 6:42pm by MathMate*

**calculus - please check question**

What are the limits? The following is not clear. -00 ∫ dx/(4-x)(3/2) 0
*Sunday, March 4, 2012 at 11:43am by MathMate*

**calculus, limits, l'hopital**

You're very welcome. Keep up the good work. Calculus is best learned with lots of practice.
*Sunday, February 13, 2011 at 3:08pm by MathMate*

**calculus - check question**

It depends on the figure which we do not see. Perhaps some information has not been transcribed. Please check.
*Thursday, March 10, 2011 at 9:39pm by MathMate*

**math (calculus)**

Daniel, this is homework help. Do I understand that you are not able to calculate 6sec^2x-7sinx when sec(x)^2 and sin(x) have been calculated for you? Or is it that the answer that you've got does not match? Please clarify.
*Friday, February 25, 2011 at 8:50am by MathMate*

**Calculus**

In calculus terms, Profit=P(q)=42q-0.006q*q dP(q)/dq = 42-0.012q = 0 q=42/0.012=3500 cases.
*Friday, July 20, 2012 at 9:44am by MathMate*

**Calculus**

Sorry, I still don't have more information on [[x]]. If you have the answer or someone else has, please post and share the information.
*Tuesday, September 1, 2009 at 8:32pm by MathMate*

**Calculus ((?))**

It is not clear whether the equation is dy/dx = 1/(2x+y-1) or dy/dx = x/2 + y -1 (as you have written) Please clarify.
*Sunday, May 1, 2011 at 3:10pm by MathMate*

**calculus**

Please post the last sentence of the question. Did the program ask you to give the answer to 4 places after the decimal, or does it ask you to give an exact answer?
*Wednesday, August 25, 2010 at 10:29pm by MathMate*

**Calculus-please check**

is the function meant to be f(x)=sqrt(((x^3)/8)+1) or f(x)=sqrt((x^(3/8))+1) In the latter case, the function is not defined in the second quadrant (x<0).
*Saturday, February 26, 2011 at 10:27pm by MathMate*

**math**

Are you doing pre-calculus or calculus? In calculus, the maximum is obtained by setting f'(t)=derivative with respect to t = 0 and solving for t. In pre-calculus, you can transform the expression by completing the squares. Ax² + Bx + C =A(x²+ (B/A)x + C/A) =A((x + (B...
*Tuesday, September 8, 2009 at 10:22pm by MathMate*

**Calculus**

If you have done functions before calculus as most students do, you can rewrite the equation in the standard form: f(x)=a(x-h)+k where the vertex is found at (h,k) or f(x)=-(3/4)(x-2)²+3 where the vertex is found at (2,3). Confirm by Calculus: f(x)=3x-3/4x^2 f'(x)=3-(3/2)...
*Sunday, August 22, 2010 at 9:51pm by MathMate*

**calculus**

Without using calculus: Amount of paint =surface area * thickness of paint(t) =4πr²*t Make sure you put everything in the right units (probably cm). Using calculus: V=4πr³/3 dV/dr=4πr²t
*Friday, October 14, 2011 at 12:51am by MathMate*

**Calculus AB-need figure**

Without a figure, it is not clear what R stands for. Here's a plot of the functions. See if it is similar to the figure in your book/exercise. Describe the region R. The question in part(b) seems incomplete, please check.
*Friday, March 11, 2011 at 4:43pm by MathMate*

**Calculus**

You're welcome!
*Tuesday, September 22, 2009 at 8:07pm by MathMate*

**Calculus :)**

You're welcome!
*Sunday, September 27, 2009 at 11:13pm by MathMate*

**Calculus**

You're welcome!
*Sunday, October 25, 2009 at 4:58pm by MathMate*

**Calculus**

You're welcome!
*Sunday, November 1, 2009 at 10:36pm by MathMate*

**Calculus**

You're welcome!
*Sunday, August 22, 2010 at 9:51pm by MathMate*

**calculus**

You're welcome!
*Tuesday, September 7, 2010 at 8:10pm by MathMate*

**calculus**

You're welcome!
*Monday, February 7, 2011 at 7:54pm by MathMate*

**calculus :)**

:)
*Saturday, March 12, 2011 at 5:30pm by MathMate*

**Calculus :)**

:)
*Sunday, March 13, 2011 at 1:11am by MathMate*

**Calculus :)**

:)
*Sunday, March 13, 2011 at 6:40pm by MathMate*

**Calculus**

Do we get to know what f(x) and T(x) are?
*Wednesday, March 23, 2011 at 6:56pm by MathMate*

**Calculus**

You're welcome!
*Saturday, May 5, 2012 at 12:44pm by MathMate*

**Calculus**

You're welcome!
*Saturday, May 5, 2012 at 12:21am by MathMate*

**Calculus - :)**

You're welcome!
*Monday, June 18, 2012 at 5:55pm by MathMate*

**Calculus - :)**

You're welcome!
*Monday, June 18, 2012 at 5:48pm by MathMate*

**Calculus :)**

You're welcome!
*Wednesday, July 18, 2012 at 5:51pm by MathMate*

**PRE CALCULUS**

Here is a graph of the function f(x). http://i263.photobucket.com/albums/ii157/mathmate/Ash.png
*Sunday, September 6, 2009 at 1:10pm by MathMate*

**calculus**

Correct!
*Monday, June 29, 2009 at 11:49pm by MathMate*

**calculus**

Thanks MathMate!
*Friday, January 21, 2011 at 5:16pm by Hector*

**calculus-continuity**

Well done!
*Friday, February 4, 2011 at 1:21am by MathMate*

**calculus**

Correct!
*Saturday, February 12, 2011 at 10:36pm by MathMate*

**Calculus **

Perfect!
*Saturday, March 12, 2011 at 7:09pm by MathMate*

**Calculus/Vectors :)**

You're welcome!
*Tuesday, May 17, 2011 at 5:46pm by MathMate*

**COLLEGE CALCULUS. HELP!**

You're welcome! :)
*Saturday, February 25, 2012 at 9:50pm by MathMate*

**Calculus**

What did you get, and how did you get your answer?
*Wednesday, March 7, 2012 at 7:47pm by MathMate*

**Calculus**

Right. You're welcome!
*Saturday, May 5, 2012 at 12:22am by MathMate*

**Calculus**

Correct!
*Thursday, May 24, 2012 at 10:52pm by MathMate*

**Calculus**

Correct!
*Thursday, May 24, 2012 at 10:52pm by MathMate*

**Calculus**

Correct!
*Thursday, May 24, 2012 at 10:51pm by MathMate*

**Calculus**

Yep, that's it.
*Friday, May 25, 2012 at 12:11pm by MathMate*

**Calculus :)**

You're both welcome!
*Monday, August 6, 2012 at 8:20pm by MathMate*

**calculus (())**

Watch missing parentheses, please. Parentheses are needed to enclose numerators and denominators, otherwise additions and subtractions will take place after the division. Separate the variables, dy/dx = (1+x)/sqrt(y) sqrt(y)dy = (1+x)dx Integrate: (2/3)y^(3/2) = x + x²/2...
*Saturday, March 19, 2011 at 6:23pm by MathMate*

**Calculus BC**

The context of the (incomplete) question indicates that s(t) represents the displacement of a particle or an object with respect to time, t. 1. Displacement is a vector, so the path does not count. Thus evaluate displacement(t=0,t=4) = s(4)-s(0) 2. To find out if the function ...
*Sunday, November 22, 2009 at 6:46pm by MathMate*

**Calculus (Thanks a bunch!)**

Mathmate - Yes, I can thank you!
*Friday, June 26, 2009 at 4:05pm by lana*

**Calculus**

Exactly! where tan(x)=1.
*Sunday, October 25, 2009 at 4:58pm by MathMate*

**calculus**

So how is the relation defined?
*Sunday, December 11, 2011 at 11:13pm by MathMate*

**Calculus AP need help!**

You're welcome! :)
*Tuesday, February 28, 2012 at 11:12pm by MathMate*

**college calculus :)**

I take it that you're OK with it.
*Wednesday, February 29, 2012 at 11:48pm by MathMate*

**Calculus grade 12**

You're welcome!
*Friday, May 4, 2012 at 1:32pm by MathMate*

**Integral Calculus :)**

No problem!
*Thursday, May 24, 2012 at 10:29pm by MathMate*

**Repost- Calculus; someone please help**

Yes, that's correct too. In exams and in general, if the number is a "round" number like e⊃2/2, I would give the answer as e²/2=3.6945(approx.) because the latter is an approximation. This will give the exact value as the answer.
*Wednesday, February 9, 2011 at 10:18pm by MathMate*

**Calculus**

Reiny, thank you for the correction. That was an oversight.
*Thursday, September 24, 2009 at 10:38pm by MathMate*

**Business Calculus/Algebra Review**

You are welcome!
*Saturday, September 11, 2010 at 4:49pm by MathMate*

**Calculus**

replace x in the expression: f(x)=1-e^(4-2x) by 2 to get: f(2)=1-e^(4-2*2) =1-e^0 =1-1 =0
*Friday, March 25, 2011 at 11:58am by MathMate*

**calculus**

Square of distance from (4,0) D(x)= ((x-4)^2+x) For minimum, D'(x)=0 2(x-4)+1=0 x=7/2
*Tuesday, December 6, 2011 at 11:00pm by MathMate*

**calculus 2**

y=x^2 dy/dx = 2x
*Thursday, February 16, 2012 at 2:40pm by MathMate*

**Calculus (Area Between Curves)**

You're welcome! :)
*Wednesday, February 29, 2012 at 4:21pm by MathMate*

**Integral Calculus**

x^2/(x^2+1) = 1 - 1/(x^2+1) You can easily integrate that.
*Thursday, May 24, 2012 at 10:29pm by MathMate*

**Calculus**

We'd be able to help if we see the figure!
*Tuesday, August 28, 2012 at 11:17pm by MathMate*

**Calculus**

f(x)=x+4/x f'(x)=1-4/x^2 f'(2)=1-1=0 Equation of tangent line: y=0(x-2)+4, or y=4
*Wednesday, June 12, 2013 at 6:11pm by MathMate*

**College Algebra**

The width is 10 in. The long side is 18 in. Let x be the distance of the bend from the edge, then the volume is V(x) = 10x(18-2x) Differentiate V(x) with respect to x to get V'(x). Solve for x in V'(x) = 0 (solution = h) Check that V"(h) (second derivative) is negative for a ...
*Sunday, October 4, 2009 at 10:15am by MathMate*

**Calculus**

I am not sure what m is supposed to mean. Can you define m?
*Sunday, February 6, 2011 at 12:50am by MathMate*

**Calculus**

See response to your later post.
*Thursday, October 13, 2011 at 9:25pm by MathMate*

**calculus 2**

Hint: use the chain rule.
*Thursday, February 16, 2012 at 3:00pm by MathMate*

**Calculus - Optimization**

Good catch, Steve. Thank you.
*Saturday, November 16, 2013 at 4:24pm by MathMate*

**calculus**

Without the definition of S(t), we are not able to do the required calculations.
*Tuesday, August 25, 2009 at 9:25pm by MathMate*

**Calculus.-corr**

Typo : "rigorous" instead of vigorous.
*Sunday, September 12, 2010 at 10:09pm by MathMate*

**Calculus**

Correct, keep up the good work!
*Tuesday, September 21, 2010 at 8:53pm by MathMate*

**Calculus**

Try differentiate sqrt(x) and see if what you get inspires you.
*Monday, April 11, 2011 at 9:30pm by MathMate*

**calculus**

Yes, your answer is correct. I missed out the three.
*Monday, November 28, 2011 at 10:06pm by MathMate*

**calculus-correction**

f(x)=-f(-x) ∀x => odd function
*Thursday, December 1, 2011 at 1:53am by MathMate*

**Physics (Please)**

Newton ponder all this, and had to invent calculus to explain what was happening. Hold your questions until calculus, you will get the answer there. Work is in calculus terms, the integral of force *dx integrated over the path. Remember that, then in calculus, all your terms ...
*Monday, October 19, 2009 at 8:29pm by bobpursley*

**calculus (please help steve)**

Indeed. I have misread the question and just calculated the area. Some work will need to be done on the function F(x,y)=(x^2+y^2)^2/(x^2*y^2) because it is an improper integral as (x,y)->(0,0). The existence of the integral will have to be demonstrated at (0,0), and the ...
*Thursday, July 25, 2013 at 6:17pm by MathMate*

**Calculus**

It comes from -4/sec(x) = -4 cos(x) So when differentiated, it gives 4 sin(x)
*Wednesday, June 10, 2009 at 11:42pm by MathMate*

**ap calculus :)**

You're welcome. I hope your teacher will clear this up on Monday.
*Friday, September 18, 2009 at 8:52pm by MathMate*

**Calculus-more info pl**

It is not clear what your question is. Do you want to calculate f'(x)?
*Wednesday, September 15, 2010 at 12:29am by MathMate*

**Calculus**

Note: the above factoring applies only when n is odd!
*Tuesday, September 21, 2010 at 8:53pm by MathMate*

**Calculus**

You may want to check if there is no typo somewhere. Other than that, I cannot think of anything else.
*Wednesday, February 23, 2011 at 8:35pm by MathMate*

**Calculus 1 Newton's Method-corr**

the targeted root of (1/2)ħsqrt(7)/2i.
*Monday, October 31, 2011 at 11:54pm by MathMate*

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