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April 18, 2014

Search: Maths Derivatives & Calulus

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Maths Derivatives & Calulus
thank u so much for ur effort and time helped me alot!!!!!
Friday, October 21, 2011 at 5:42am by Yousef

Maths Derivatives & Calulus
1) Find d^2y / dx^2 given that y^3 - x^2 = 4 2)If y = x + ( 1 / x ) , prove that x^2 . y'' + xy' a^2 . y = 0 3) Find dy/dx for the following function. cos ( x - y ) = ( y ) ( 2x + 1 ) ^3 4)Find the values of A and B that make f(x) differentiable at x = 0 f(x) = A + 2x + 3...
Friday, October 21, 2011 at 5:42am by Yousef

Maths Derivatives & Calulus
y^3 - x^2 = 4 3y^2 y' - 2x = 0 y' = 2x/3y^2 6y y'^2 + 3y^2 y'' - 2 = 0 y'' = (2 - 6yy'^2)/3 = (2 - 6y(2x/3y^2)^2)/3 _______________ y = x^a + 1/x^a y' = ax^(a-1) - a/x^(a+1) y'' = a(a-1)x^(a-2) + a(a+1)/x^(a+2) x^2 y'' = a(a-1)x^a + a(a+1)/x^a xy' = ax^a - a/x^a -a^2 y = -a^2 ...
Friday, October 21, 2011 at 5:42am by Steve

convert derivatives of x,y,z, to r, Ɵ,z
convert derivatives of x,y,z, to r, Ɵ,z with chain rule? I want provment rules of converting rectangular derivatives to cylindrical derivatives and and also cylindrical to spherical.I know the rules but I cant prove EQUATIONS.thx alot
Thursday, December 1, 2011 at 2:58pm by parsa

math
I studied derivatives before, but kind of forgot them all, is there a website that gives me an overview of derivatives. What is first and second derivatives, how to find it, all the derivative rules and so on... thank you
Thursday, October 9, 2008 at 12:52am by Sam

Maths
Find the derivatives of these: f(x)=√
Tuesday, November 13, 2012 at 11:18pm by alexis

Math-Derivitives
if f(x)=x^3+5x, then f'(2)= if f(x)=cos(2x), then f'(pi/4) derivatives and anti derivatives please help
Tuesday, March 23, 2010 at 10:18pm by AdrianV

Maths Calculus Derivatives & Limits
Drag out L'Hospital's Rule 1) 1/3 (8+h)^(-2/3) / 1 = 1/3 * 1/4 = 1/12 2) -2sinx/3 = -√3/3
Tuesday, October 25, 2011 at 9:19am by Steve

Maths Derivatives
thank u so much i realised that i had the correct answer but wasnt sure about the signs
Tuesday, October 25, 2011 at 8:38am by Yousef

maths
At a 0/0 singularity such as this, you just take the ratio of derivatives: (3x^2)/2x = (3/2)*x = 3 That is called L'Hopital's Rule.
Thursday, January 5, 2012 at 2:14am by drwls

Maths Calculus Derivatives & Limits
Oops. Using definition of derivative. Check back later. Lots of messy algebra.
Tuesday, October 25, 2011 at 9:19am by Steve

Calulus
f(x) is increasing where f'(x) > 0
Thursday, May 2, 2013 at 3:31pm by Steve

Maths Derivatives
If y = x ^ n + ( 1 / x ^ n ) prove that ( x^2y'' ) + ( xy' ) - ( n^2y ) = 0
Tuesday, October 25, 2011 at 8:38am by Yousef

calulus
lim tanx - x x->0 x^2
Sunday, August 15, 2010 at 9:23am by Lereesa

calculus
find the second-order partial derivatives of f(x,y)=x^3 + x^2y^2 + y^3 + x+y and show that the mixed partial derivatives fxy and fyx are equal
Wednesday, March 7, 2012 at 11:06am by maggie

calculus
find the second-order partial derivatives of f(x,y)=x^3 + x^2y^2 + y^3 + x+y and show that the mixed partial derivatives fxy and fyx are equal
Wednesday, March 7, 2012 at 11:10am by maggie

maths
oops. how could I have mixed up derivatives with integrals? There is no product rule. However, we do have 8^x * 9^x * 5^x = 360^x which should be easy to do, no?
Saturday, December 22, 2012 at 1:16pm by Steve

Calulus 2
Solve the differential equation: dy/dx = y^2 + y
Tuesday, October 30, 2012 at 5:16pm by Heather

Calulus
At what interval is 2x^3+0x^2-54x+6 increasing?
Thursday, May 2, 2013 at 3:31pm by Lauren

Calculus: Derivatives
I'm having trouble understanding what derivatives in calculus (instantaneous speed) is. Can someone please explain it to me, or provide some easy links to learn from? Thanks!
Sunday, September 9, 2007 at 8:32pm by Joe

Calulus
[(5.2)^x (5.2)^-7]/(5.2)^-5 That whole thing is (5.2)^9 But I have no idea how to find the exponent x?
Tuesday, March 24, 2009 at 11:46am by Callie

Maths
Find the derivatives of these: f(x)=(√(x))sinPix Also: f(x)=√(Cosx+sinx) Steps would be greatly helpful as I will be able to use them as reference. Thank you.
Tuesday, November 13, 2012 at 11:22pm by Alexis

math
It is important to know rates of change in many fields. Derivatives appear often in physics and engineering. Accurate predictions are made using equations that employ derivatives. They are called differential equations.
Saturday, August 21, 2010 at 3:29am by drwls

Statistics & Numerical Techniques
Because that is the rule for polynomial derivatives. Add up the derivatives of each term. The derivative of a constant term (like -20 in your case) is zero. The derivative of a*x^n is n*a*x^(n-1)
Wednesday, September 16, 2009 at 7:33am by drwls

calulus - incomplete
I think I'll pass on this and your others. There seems to be a lack of completeness of the information provided.
Saturday, November 3, 2012 at 11:53pm by Steve

calculus (limits)
I do know how to take derivatives however the course I'm in hasn't taught them yet (long story) so I can't use derivatives in finding the solution; I have to factor. So perhaps a better question is: how do I factor the above expression in a way that will allow me to find the ...
Saturday, January 22, 2011 at 2:09pm by John

Calculus (Derivatives)
What is the derivative of the this functon? g(x) = -500/x, x cannot equal 0. I know that in order to fnd the derivative I need to put the function into the equation for evaluating derivatives as limits. lim as h -> 0 (f(x+h) - f(x))/h I did this, but I am having ...
Tuesday, November 1, 2011 at 2:37pm by Mishaka

derivatives
You should have a list handy for the basic trig function derivatives so if y = (csc x)^7 -cos 4x dy/dx = 7(csc x)^6 ( -csc x)(cotx) + 4sin(4x) etc
Thursday, October 27, 2011 at 11:57pm by Reiny

math
You also can in google type: derivatives online When you see listo of results click on: numberempirecom/derivatives.php and solvemymathcom/online_math_calculator/calculus/derivative_calculator/index.php On this sites you will see your derivation in two different simplify forms
Wednesday, February 16, 2011 at 8:05pm by Bosnian

derivatives
The derivatives of these trig functions should be right there in your Calculus text. for the second of your questions, I will use y' for the first derivative and y" for the second derivative i.e. y'= dy/dx 1+y=x+xy so y' = 1 + y + xy' y'(1-x) = 1+y y' = (1+y)/(1-x) y" = [(1-x)...
Wednesday, October 31, 2007 at 10:34pm by Reiny

Pre calulus only 15 min left HELP!
((ln(x))^1/2)/(ln(x^1/2))=6 solve for x
Sunday, March 3, 2013 at 10:35pm by tyler

Calculus
show that the curves r=asin() and r=acos() intersect at right angles. can you show that the derivatives for each are the negative reciprocal of each other? That is the key. i need more info..i know how to find the derivative...but how will that prove my question. Do I need ...
Thursday, April 5, 2007 at 6:02pm by Amy

Calc 2
a) find the partial derivatives of each, and just plug in 1 for x and 3 for y (values should be close to 0)/ b) in using the difference quotients, take the limit as h approaches infinity of both each derivative, plugging in 0.1 for x and y in each one. It's better that you ...
Sunday, February 27, 2011 at 11:18pm by Joseph

calculus
a)find the first partial derivatives of f(x y)= x √1+y^2 b)find the first partial derivatives of f(x,y)= e^x ln y at the point (0,e)
Sunday, March 11, 2012 at 1:00pm by maria

calculus - derivatives
can you please find the first 5 derivatives for: f(x) = (0.5e^x)-(0.5e^-x) f'(x) = ? f''(x) = ? f'''(x) = ? f''''(x) = ? f'''''(x) = ? thanks :) f(x) = (0.5e^x)-(0.5e^-x) f'(x) = 0.5 e^x + 0.5 e^-x f''(x) = 0.5 e^x - 0.5 e^-x f'''(x) = 0.5 e^x + 0.5 e^-x f''''(x) = 0.5 e^x - 0...
Monday, July 30, 2007 at 6:15pm by COFFEE

Calulus
Solve the triangle.Round lenghts to the nearest tenth and angle measurements to the nearest degree. B = 43 C = 107 B = 14
Monday, November 19, 2007 at 9:42am by kelly

Calculus grade 12
a) determine the derivative of y = sin2x b) determine the derivative of y = 2SinxCosx c) shoe that derivatives in parts a) and b) are equal d) explain why derivatives in parts a) and be should be equal.
Thursday, April 12, 2012 at 12:31am by Julie

calulus
A plane flying at a constant rate of 200km/hr. What is the distance travelled by the plane 3mintues after it passes the observation point.
Saturday, November 3, 2012 at 11:53pm by Daniella

Maths Calculus Derivatives & Limits
Using the definition of the derivative evaluate the following limits 1) Lim h---> 0 [ ( 8 + h )^1/3 - 2 ] / h 2) Lim x ---> pi/3 ( 2cosx - 1 ) / ( 3x - pi)
Tuesday, October 25, 2011 at 9:19am by Yousef

Calulus
Use the Midpoint Rule with n =3 to approximate the integral −1−8(10x−9x2)dx
Sunday, May 12, 2013 at 6:29am by Ryan

Calculus
Find the outside and inside functions of the following to find their derivatives: 1) sqrt(2x+9) 2) cos(cos(x)) 3) tan(x) I already know how to find their derivatives I'm just not exactly sure what parts of the chain rule equation would be considered the outside and inside.
Tuesday, June 18, 2013 at 2:41pm by Robin

Maths Calculus Derivatives & Limits
Use the binomial theorem to expand (8+h)1/3 (8+h)1/3 - 2 = 81/3 + 1/3 8-2/3h - 1/3 * 2/3 8-5/3h2 + ... = -2 + 2 + 1/3 * 1/4 h - 2/9 * 1/32 h2 + ... Divide by h and all the terms with h2 or higher go away, leaving only: 1/3 8-2/3 = 1/12
Tuesday, October 25, 2011 at 9:19am by Steve

calulus
The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V
Friday, May 4, 2012 at 11:25pm by cjones

Calculus/Derivatives
In addition, can you walk me through how to get the derivatives for these 2 statements, too? a) y = x^5/3 - 5x^2/3 b) y = (the cubed root of the quantity) [(x^2 - 1)^2] Hi there. I need to find the first derivative of this statement. y=x(x+2)^3 I tried the chain rule, but I ...
Wednesday, March 14, 2007 at 9:07pm by Amy

Derivatives
Find the derivatives of: 1. H(x)= sin2xcos2x The answer given is 2cos4x. My question is, how in the world did they get that!? Shouldn't the answer at least contain the sin function, either negative or positive seeing as it's the derivative of cos? Also, which rules are ...
Thursday, October 3, 2013 at 3:52am by Daisy

Calulus
Given \displaystyle \int_0^{\frac{3\pi}{2}} x^2\cos x \, dx = a - \frac{b\pi^2}{c}, where a, b and c are positive integers and b and c are coprime, what is the value of a + b + c?
Sunday, March 10, 2013 at 3:28pm by John

Calulus Completely lost
Find the indicated one-sided limit, if it exists 1.lim f(x) and lim f(x), where x->0^+ x->0^- 2. f(x) = [2x if x is less than 0] [x^2 if x is greater than or equal to 0]
Tuesday, February 8, 2011 at 10:01am by Anonymous

Calc. Checking Answer
a. correct b.Somehow I get the negative of your result. See http://calc101.com/webMathematica/derivatives.jsp#topdoit
Wednesday, April 6, 2011 at 5:36pm by bobpursley

calulus
a particle is moving along the cure y=sqrt x. as the particle passes through the point (4,2), its x-coordinate increase at a rate of 3 cm/s. how fast is the distancefrom the particle to the origin changing at this instant?
Thursday, November 19, 2009 at 7:35pm by jackie

Maths Calculus
We want to build a rectangular cardboard box with no top and of given volume V using the least quantity of cardboard. Find the length of the box's edges by fnding the minimum of the total surface function. Verify that the point you found is indeed a minimum applying the second...
Thursday, April 25, 2013 at 10:31am by Mohit

Calulus
Man, can you cut the TEX? I think you have ∫[0,3π/2] x^2 cosx dx = a - bπ^2/c well, that's 2 - 9/4 π^2, so (a,b,c) = (2,9,4), so a+b+c=15
Sunday, March 10, 2013 at 3:28pm by Steve

Calculus 2
I don't understand why you were instructed to use trig substitution for this question, it is straightforward You should recognize certain pattern of derivatives and integrals Notice that the derivative of the denominator is 2x and we have x at the top, so this follows the ...
Wednesday, October 10, 2012 at 9:08pm by Reiny

math
Have you considered a Calculus Text? Even a review/study guide? Schuam's College Outline Series, College Calculus is very good. It is available at Barnes Noble. http://math2.org/math/derivatives.htm
Thursday, October 9, 2008 at 12:52am by bobpursley

Math >> limits
The limit is of the form: Lim x--> 0 f(x)/g(x) where f(0) = g(0) = 0. So we can't take the limits for f and g separately and divide them. Rewrite the limit as: Lim x--> 0 [f(x) - 0]/[g(x) - 0] = Lim x--> 0 [f(x)-f(0)]/[g(x)-g(0)] Lim x-->0{[f(x)-f(0)]/x}/{[g(x)-g(0...
Wednesday, September 5, 2007 at 6:57am by Count Iblis

Calculus
What is wrong with the following reasoning??? f(x) = 2^x f'(x) = x[2^(x-1)] Although n x^(n-1) is the derivative of x^n, you cannot apply similar rules when x is the exponent and the number being raised to a power is a constant. The derivative of b^x, where b is a constant, is...
Wednesday, June 13, 2007 at 10:40pm by Raj

Math
dq/dt is rate of q changing with respect to time. It is a calulus term. dx/dt is rate of change of x, and so on. That is what surprised me about the question, rate is a calculus term.
Friday, December 4, 2009 at 4:05pm by bobpursley

UET Peshawar
P[C.S]=270/500 P[Maths]=345/500 P[C.S ∩ Maths]=175/500 ( P[C.S U Maths] )' = ? ANS. ( P[C.S U Maths] )' = 1-P[C.S U Maths] =1-{P[C.S] + P[Maths] - P[C.S ∩ Maths]} =1-{270/500 + 345/500 -175/500 } =1-{440/500} =1-0.88 =0.12
Friday, June 3, 2011 at 2:53pm by Sheraz

Maths Calculus Derivatives
Find the first derivative for the following functions 1) f(x) = sin(cos^2x) cos(sin^3x) 2) f(x) = ( tan 2x - tan x ) / ( 1 + tan x tan 2x ) 3) f(x) = sin { tan ( sqrt x^3 + 6 ) } 4) f(x) = {sec^2(100x) - tan^2(100x)} / x
Saturday, October 22, 2011 at 7:31am by Yousef

Math
Make a complete re search project on maths is interconnected with other subject i.e. Maths Vs computer using art with maths.
Tuesday, June 5, 2012 at 4:01pm by Shivansh Tomar

Calculus
Without specifying the f(x,y,t) function, you can only give a general formula. dz/dt(total) = z/x*dx/dt + z/y*dy/ dt + z/t where all of the z derivatives on the right are partial derivatives. dz/dt(total) = b z/x+ c z/y + z/t I won't know if the ...
Saturday, February 27, 2010 at 2:11pm by drwls

derivatives
[ low*d(high) - high*d(low) ] / (low)^2 where high = numerator low = denominator d(high) and d(low) = respective derivatives first recall that the derivative of csc x = -(cot x)(csc x) therefore, [ x*(-6 (cot x)(csc x)) - 6 (csc x) ]/x^2 or -(6 csc x)*(x(cot x) + 1)/x^2 hope ...
Friday, October 28, 2011 at 1:29am by Jai

Calulus
if 5.2x-7+5=5.29 then x-7+5=9 and you solve for x.
Tuesday, March 24, 2009 at 11:46am by bobpursley

Calculus AB
http://www.jiskha.com/display.cgi?id=1292545967 list of common derivatives http://www.ecalc.com/math-help/worksheet/calculus-derivatives/
Thursday, December 16, 2010 at 7:28pm by TutorCat

calulus
distance to origin=sqrt(x+ x^2) d distance/dt= 1/(2sqrt(x+x^2)*(dx/dt+ 2xdx/dt) you have x, dx/dt solve for ddistance/dt
Thursday, November 19, 2009 at 7:35pm by bobpursley

Calc 2
Lim 3x^2 csc^2 can be written x->0 Lim 3x^2/sin^2x x->0 You can get the limit as x->0 using L'Hopital's rule: It is the ratio of the derivatives of numerator and denominator. You have to apply it twice here, since the first derivatives are also 0/0 Lim 3x^2/sin^2x x-&...
Friday, February 29, 2008 at 12:56am by drwls

Calculus (final question I promise)
After all the help you have received here, you should be able to most of these questions yourself. You should also make the effort to type a ^ before exponents. Show your work and someone will help you. Factor the equations to find the x-axis interecepts. plug in x = 0 to get ...
Monday, July 28, 2008 at 8:56pm by anonymous

Maths B
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
Thursday, May 24, 2012 at 5:49am by Anna

Maths B
Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
Thursday, May 24, 2012 at 9:02pm by Anna

Calulus
Hi there I need help with one of the problem from my homework package. This week for my calculus class, we were learning how to do partial derivative and finding the tangent of the plane. So I do not know how to approach this problem. Please help me by how to derive this ...
Sunday, October 25, 2009 at 6:12pm by shylo

Calculus Graph help!!!
I need help with a calulus graph and figuring out its equation but it wont let me post the picture of the graphs here. so will someone who understands Calculus and their graphs super well please email me k m k underscore horse lover at hot mail dot com. no spaces and an actual...
Wednesday, May 2, 2012 at 9:44pm by kelsey

Maths Calculus Derivatives
Just gonna dump some problems on us? The solution to your previous posting should help some. Hints: 1) use product rule, chain rule 2) use quotient rule, chain rule 3) use chain rule, chain rule, chain rule 4) use quotient rule, chain rule
Saturday, October 22, 2011 at 7:31am by Steve

maths letaracy,history,geography and life science
im going to grade 10 next year,and i want to be a psychologist and im going for maths letaracy and history feild im realy not good with maths and i just found out a few weeks ago that i need pure maths to do psychology.i dont know what to do now ,i also dont know the jobs ...
Saturday, October 26, 2013 at 8:02am by khanyisa maringa

maths
well the only thing about maths is that you get stuck on it which is so annoying well the way i know how to do maths is if your mum or dad has got a calculater then sneak into were they keep it an and use it for your homework or you could just get a nerd to do your maths now ...
Sunday, April 13, 2008 at 4:19pm by permicouas

maths
well the only thing about maths is that you get stuck on it which is so annoying well the way i know how to do maths is if your mum or dad has got a calculater then sneak into were they keep it an and use it for your homework or you could just get a nerd to do your maths now ...
Sunday, April 13, 2008 at 4:19pm by permicouas

Calulus
Consider the following function. f(t) = 3t2 − 3 (a) Find the average rate of change of the function below over the interval [3, 3.1]. (b) Compare this average rate of change with the instantaneous rates of change at the endpoints of the interval. (at t = 3) (at t = 3.1)
Friday, October 15, 2010 at 3:51pm by Sophie

calulus
The top and bottom margins of a poster are 8 cm and the side margins are each 6 cm. If the area of printed material on the poster is fixed at 380 square centimeters, find the dimensions of the poster with the smallest area. find the width and height
Monday, March 19, 2012 at 2:57pm by Mandy

Derivatives
differentiate and simplify y= (e^x - 1) / x^2
Sunday, March 25, 2012 at 4:37pm by help

maths
i am told to do a project in maths it should involve a maths consept.pls help as to what should i do?
Sunday, November 18, 2007 at 4:43am by chandini

Calculus - Derivatives
Oh, okay. I got it. Thanks!
Wednesday, October 3, 2007 at 11:39am by Adam

Calculus
isn't there a way you do it with the derivatives?
Tuesday, November 13, 2007 at 12:31pm by Joe

Calc--derivatives
did u get e^(lnx) / x^2 ??
Tuesday, October 13, 2009 at 5:45pm by Carolina

Math-Derivatives!!!
-4x^4 x^1/2+(-7/(x^2 x^1/2))
Thursday, September 9, 2010 at 8:13pm by Janel

Calculus
Compute the derivatives of : f(x)= x^7 + 7^x+ 7^7
Monday, November 22, 2010 at 6:54pm by JJ

trig derivatives
-8sinx
Thursday, October 27, 2011 at 11:21pm by Reiny

Calculus-derivatives
Determine h'(x) for h(x)= [x/(1-x)]^2
Monday, February 20, 2012 at 3:23am by Jessi

Calculus
Hi~ Thank you for your help! I was trying to work on a problem about Taylor series, but i don't think im approaching the problem the right way. I have to find the fifth order Taylor polynomial and Taylor series for the function f(x) at x = 0. f(x) = 1/(x+2) I tried to just ...
Monday, March 7, 2011 at 9:18pm by KIKSY

calculus
derivatives. f(x)=(1/-7x^12) f'(2)=? f'(-1)=?
Friday, January 18, 2008 at 6:47pm by mike

// calculus - derivatives
yours is correct
Saturday, October 24, 2009 at 5:56pm by bobpursley

calc
What are the first and second derivatives of y = (1/x^2)-(1/(x-2)^2)?
Sunday, November 1, 2009 at 8:18pm by Freddy

Math-Derivatives.
good job
Wednesday, March 24, 2010 at 10:50pm by Reiny

derivatives
How do you find the derivative of (6 csc x)/x?
Friday, October 28, 2011 at 1:29am by hannah

Calc
What are the first and second derivatives of y= x^(2/3) * (2.5 - x)
Sunday, January 8, 2012 at 6:41pm by Anonymous

Calc
what are the first and second derivatives for y= x* (4-x^2)^1/2
Sunday, January 8, 2012 at 6:42pm by Anonymous

calc
what are the first and second derivatives for y= x* (4-x^2)^1/2
Sunday, January 8, 2012 at 10:24pm by Anonymous

calc
What are the first and second derivatives of y= x^(2/3) * (2.5 - x)
Sunday, January 8, 2012 at 10:24pm by Anonymous

Calculus-derivatives
Oh crap nvm!
Wednesday, February 15, 2012 at 5:37pm by Jake

Anti-Derivatives
Integrate? Meaning?
Thursday, April 26, 2012 at 3:32pm by I Need Help

CALCULUS DERIVATIVES CONTINUITY
I agree with e
Thursday, May 31, 2012 at 5:11pm by Damon

calculus
Find the derivatives of the functions k(x)=(x^3+e^x)^4
Monday, February 11, 2013 at 9:27pm by Joe

derivatives
yup! sloppiness on my part
Tuesday, March 18, 2014 at 11:39pm by Reiny

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