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Functions, graphs and derivatives |
2003-10-05 |
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Jathiyah pose la question :
I wanted to know how would you tell (on a graph diplaying two funtions), which funtion is the derivative of the other?
Walter Whiteley lui répond. |
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The slope of a tangent |
2003-10-01 |
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A student pose la question :
find the slope of the tangent to each curve at the given point f(x)=square root 16-x, where y=5
Penny Nom lui répond. |
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A rectangle in a circle |
2003-09-27 |
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Abdu pose la question :
A rectangle ABCD is inscribed in a circle. If the length of AB is 5 and length of BC is 12, what is the area of circle outside the rectanlge ABCD?
Penny Nom lui répond. |
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Relatively prime |
2003-09-27 |
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James pose la question :
what is the definition a relative prime numbers?
Penny Nom lui répond. |
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0/0 |
2003-09-25 |
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Thomas pose la question :
How is 0/0 ever defined.
Penny Nom lui répond. |
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Absolute value |
2003-09-23 |
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Crystal pose la question :
I am trying very hard to understand Absolute Value, and I cannot seem to grasp the idea. I do not know why we use it, what the point of it is. I do not know how to use it. I know that it is always positive or zero, and I assume it relates to distance, but how can you use it in equations. Please explain it to me as simply as possible, thank you.
Walter Whiteley lui répond. |
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The golden ratio |
2003-09-23 |
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Phillip pose la question :
The Golden Section can be made from an equilatereral triangle inscribed within a circle. The Golden Section is achieved by joining the mid points of two arms of the triangle to the circumference. I can prove this by erecting a perpendicular to the line outside the circle, but am interested to see how it can be proved from within the circle.
Chris Fisher lui répond. |
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Primes |
2003-09-23 |
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Julie pose la question :
#1. Suppose you are given a number (n) and told that 1 and the number (n) divide into (n). Does that mean (n) is prime? #2. Suppose that p is a prime number greater than or equal to 3. Show that p+1 cannot be a prime number.
Penny Nom lui répond. |
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The Sieve of Eratosthenes |
2003-09-18 |
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Lynn pose la question :
My daughter has been asked to find all the prime numbers by using the Sieve of Eratosthenes. I have no understanding what this means.
Penny Nom and Claude Tardif lui répond. |
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1 + 1 = 10 |
2003-09-17 |
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David pose la question :
could you please explain to me how 1+1=10 thanks
Penny Nom lui répond. |
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Applications of logarithms |
2003-09-16 |
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A student pose la question :
I have a project due in my algebra two class dealing with logs and where they are used in life, but I am having trouble finding websites that relate. So I would really appreciate it if you couldhelp me.
Penny Nom lui répond. |
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Notation |
2003-09-15 |
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Kim pose la question :
Question:
i have a couple of questions 1. write in standard form
a)4x2x8 b) 5 to the power of 4 .
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Penny Nom lui répond. |
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Substitution method |
2003-09-14 |
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John pose la question :
Hello, my name is john and while I was finishing up my work I stumbled into these problems. a/4-b=-1
a+b=11
and
6a-b=-5
4a-3b=-8 Thanks a lot. I really need some help :)
John
Penny Nom lui répond. |
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The volume of an earthen pit |
2003-09-12 |
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Bruce pose la question :
This shape would occur at the four corners of a rectangular shaped earthen pit with sloping sides (1:1.5). Depth is 14'. Top dimensions are 170' by 158'. After calculating the easy volume components of this shape, we are left with the end corner pieces. 21' base, 14' height, side hypotenuse 25.24' and corner diagonal 32.83'. We're confused. Thank you for any help you may provide.
Penny Nom lui répond. |
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The digits in 349 |
2003-09-12 |
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Franik pose la question :
in the number 349, which number has the least value, and why?
Penny Nom lui répond. |
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