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The quotient rule |
2000-02-21 |
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Charlene Anderson pose la question :
Question: I came across a question in our book that states: Let Q(x) = N(x) / D(x) Then re-write Q(x) in a form that can utilize the Power and Product Rules. Use this rearranged form to derive the Quotient Rule. The Quotient Rule can be derived from the Power Rule and the Product Rule. One must also use the chain rule too, right?
Harley Weston lui répond. |
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Mass of the earth |
2000-02-21 |
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Terry Broughton pose la question :
My name is terry i am 15 my question is how much does our planet earth weigh ?
Chris Fisher and Harley Weston lui répond. |
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Why counterclockwise? |
2000-02-21 |
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Drew pose la question :
Why do the numbers of quadrants in a graph increase in a counter clockwise pattern? Why aren't they numbered increasingly in a clockwise pattern?
Chris Fisher lui répond. |
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Irrational algebraic functions |
2000-02-21 |
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Bucky Cadena pose la question :
Here is the multipart problem: Given f(x) = x-3* squareroot of x + 4 What does the f(x) intercept equal Find the two values for which f(x) = -5 Find the one value for which f(x) = -3
Harley Weston lui répond. |
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Three factors |
2000-02-21 |
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A parent pose la question :
Question from a parent helping a child, grade 4, with homework. Can a number have three factors? Name three numbers that have three factors.
Penny Nom lui répond. |
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Perimeter of an ellipse |
2000-02-21 |
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Kurtis Proffit pose la question :
What is the formula for the perimeter or circumference of an ellipse?
Chris Fisher lui répond. |
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Number sense |
2000-02-17 |
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A college student pose la question :
I am a college student and I am to answer the following question: Describe ways of telling by simple inspection when a fraction has a value close to 0; close to 1/2; and close to 1. I am to imagine that I am a 3rd grader answering this question. Any thoughts please?
Penny Nom lui répond. |
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Jogging up a hill |
2000-02-17 |
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Aaron Williams pose la question :
A man jogs down the hill at 6 miles per hour and back up at 4 miles per hour. The total time that he travels is 5/4 hours. What is the total distance that he jogged. The solution is supposedely 3 miles, but i believe that it is 6. Can you help me? Please.
Claude Tardif lui répond. |
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A trig identity |
2000-02-17 |
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Eric pose la question :
Question:
How do I solve this problem? sin3x cos3x _____ - _____ = 2 sinx cosx
Chris Fisher lui répond. |
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The length of a cylinder |
2000-02-17 |
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Kelly Wichmann pose la question :
What is the formula to figure the volume of a cylinder? We have a cylinder that is 2 3/4" in inside diameter and a gallon of oil that needs to fill it. We are trying to figure out how long the cylinder should be. Can you help us?
Chris Fisher lui répond. |
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Cross multiplication |
2000-02-16 |
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J E Swinton pose la question :
Why does cross multiplication work? How come canceling work?
Penny Nom lui répond. |
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Least Common Multiple |
2000-02-16 |
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Kathy Heath pose la question :
The way I understand it is for 2,3,9 the least common multiple is 18. Am I right? If so, I guess the least common multiple for 3,4,7 is 105. Please let me know if I'm right so I can tell my daughter.
Denis Hanson lui répond. |
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Change for a dollar |
2000-02-16 |
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Rachelle pose la question :
What is the least positive number of coins that is impossible to give out change for a dollar? It is higher than 50 i know and you can us dimes, nickels, pennies, quarters, 50 cent pieaces and silver dollars.
Claude Tardif lui répond. |
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2 = 1 |
2000-02-16 |
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Chuck Kennedy pose la question :
Question: - Assume a=b
- Multiply both sides by a, a2=ab
- Subtract b2, a2-b2=ab-b2
- Factor (a-b)(a+b)=b(a-b)
- Cancel like factors a+b=b
- Substitue b for a b+b=b
- Then 2b=b
- Therefore 2=1
Question; Were is the mistake?
Claude Tardif lui répond. |
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La bissectrice de l'angle ABC |
2000-02-16 |
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Laurent Gauthier pose la question :
Est-ce redondant d'ecrire "angle ABC" avec un accent circonflexe sur le B? Peut-on ou devrait-on se contenter d'ecrire soit ABC (avec l'accent), soit l'angle ABC (sans accent) ? Le contexte dans lequel ceci apparait est le syntagme "la bissectrice de l'angle ABC", c'est-a-dire que je me demande si on devrait ecrire "la bissectrice ABC " (avec accent), "la bissectrice de l'angle ABC" (sans accent) ou "la bissectrice de l'angle ABC" (avec accent).
Claude Tardif lui répond. |
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