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y = sin(x) + 3 |
2009-11-10 |
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From Kapilan:
When graphing trigonometric functions like SIN and COSINE does f(x)=x
squared equal to SIN or COSINE
Also what is the range, domain, period and ampliltude for y=sin@ + 3
Answered by Harley Weston. |
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f(x)= (e^x) / [(e^x)+(ex^2)] |
2009-11-10 |
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From natalie:
I'm trying to graph the function, f(x)= (e^x) / (e^x)+(ex^2) [e to the x divided by e to the x plus e times x squared] I know that there aren't any vertical asymptotes, but is there a horizontal asymptote? and also, I'm stuck on finding the concavity for this graph. I tried to find f "(x), but it came out to be really long and I am not sure how to find the x values for f "(x) without using a graphic calculator.
thanks,
natalie
Answered by Chris Fisher and Harley Weston. |
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A rate of 67 per 1000 |
2009-11-10 |
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From ANTHNONY:
if the rate is 67 per 1000 the fraction is 67/1000 how do I present the expanded form
Answered by Penny Nom. |
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A drawing of a baseball diamond |
2009-11-09 |
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From Beth:
My husband has a drawn diagram on a piece of paper of a baseball diamond. He knows that on the paper 1 1/16" (1.6875") = 90 actual feet. How do we calculate how many feet 5 7/8" on the paper would be?
Answered by Penny Nom. |
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Consecutive odd integers |
2009-11-09 |
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From Erin:
I'm having trouble with consecutive integers. i know it goes n + n + 1 + n + 2
and so on, but if its odd then do the numbers change to odd ones? i don't know
the question is: the sum of four consecutive odd integers is -72. write an equation to model
this situation and find the values of the four integers
Answered by Robert Dawson and Penny Nom. |
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A problem in a hexagon |
2009-11-07 |
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From WIlliam:
I have a regular hexagon and all sides are 8 cm. I need to find the line segment
point a to point b. Point B is on the top left of the hexagon and the Point A is on the
middle right side, I know the line pass through 2 Equilateral triangles, I'm just not
sure how to do the equation.
Also how would you measure a line that goes right in the middle from one end to
the other
Answered by Harley Weston. |
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The cardinality of the prime numbers |
2009-11-07 |
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From Justin:
Hello there, I was just wondering since the number of primes is infinite,
are they equal to infinity or Aleph-null?
Justin
Answered by Robert Dawson and Victoria West. |
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sinA + cosA = 1 |
2009-11-06 |
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From Nazrul:
What is the solution of sinA+cosA=1 where A is an acute angle? Will A=0 degree be included in the solution? Please explain.
Answered by Harley Weston. |
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Find the original price |
2009-11-06 |
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From Cyndy:
Find the original price of a pair of shoes if the sale price is $98.00 after a 30% discount.
Answered by Penny Nom. |
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Tetrahedral numbers |
2009-11-06 |
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From rena:
consider the tetrahedral numbers 1,4,10,20, etc. Can these numbers be
described as a polynomial? If so, what is the degree of that polynomial?
Answered by Stephen La Rocque. |
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A minute hand |
2009-11-05 |
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From Pardha:
A minute hand of table clock is 3cms long. How far its tip move in 20 minutes
Answered by Penny Nom. |
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Jill and Bill |
2009-11-04 |
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From Lisa:
Jill and Bill are two members of the Hill family. Jill is 8 years old and Bill is 9 years old. What will Bill's age be when the total of the digits in both their ages is once again 17?
Answered by Stephen La Rocque. |
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Commodity price increase |
2009-11-04 |
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From bharat:
if price of a commodity increases by x% the to keep the expenditure same
the decrease in consumption should be (x/(x+100))*100, why?
Answered by Penny Nom. |
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Une piscine |
2009-11-04 |
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From kemayou:
Dans un de ces problèmes,ma fille se trouve face à cette question,et je ne parviens pas à l'aider,pourriez-vous nous donner un petit coup de pouce?
Voici l'énoncé:Un jardin a 22m de long et 8m de large.Au centre du jardin,on a fait construire une piscine dont le périmètre est de 44m.La surface restante est couverte de gazon.
La question est :exprimer en fonction de x la longueur de cette piscine.
Dans l'attente de votre réponse,recevez nos salutations distinguées.
Merci.Mme kemayou
Answered by Claude Tardif. |
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3x^3-3x-3 and 3x+6 |
2009-11-04 |
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From spencer:
My question is 3x^3-3x-3 devided by 3x+6
Answered by Penny Nom. |
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