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Logarithmic differentiation |
2005-05-23 |
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Richard pose la question :
I need to convince myself that I understand the process of
differentiating y=xx.
The specific question is that if I have to take the logarithm of both sides
of the equation how can differentiate the following?
y= {(x+2)(x+2)}/{(x+1)(x+1)} - {(x+1)(x+1)}/(xx),
I have an idea that the differential of this fairly complex function
is itself ... am I right or wrong.
Penny Nom lui répond. |
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Cubic feet of concrete |
2005-05-23 |
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Robert pose la question :
REQUIRED CUBIC FEET OF CONCRETE TO POUR AN EXTENDED PAD
8 FEET X 8 FEET X 6 INCHES DEEP
Penny Nom lui répond. |
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50^99 and 99! |
2005-05-23 |
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Romel pose la question :
Which number is greater, 5099 or 99!
Claude Tardif lui répond. |
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A triangular lot |
2005-05-21 |
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Linda pose la question :
I am looking to purchase a piece of property, and I need some help trying
to figure out the square footage of the land. I know that
normally if I multiply the length and width I could get my answer. However,
this piece of land is an odd shape and has 3 measurements. Can you
please help me.
The measurements for this piece of land is:
97.8'
201.2'
139.7'
Penny Nom lui répond. |
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The area of an octagon |
2005-05-21 |
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Jeremy pose la question :
i need to find the area of an octagon with each side measuring 1 foot
Penny Nom lui répond. |
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Factoring |
2005-05-20 |
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Abraham pose la question :
Can you please explain to me how to factor completely the following problem:
(sqrt(x+1))-((x2+2x+1)( -7/4)).
Penny Nom lui répond. |
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A right triangle |
2005-05-18 |
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Bill pose la question :
If I know the base and the slanted side of a right triangle, how do I figure out the height?
Penny Nom lui répond. |
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The units digit |
2005-05-18 |
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Gerald pose la question :
Juan wrote the first 12 powers of 2. He noticed a pattern in the digits in the units places of the results. He said he could use this pattern to predict the digits for 2 to the power of 100.
Penny Nom lui répond. |
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The circumference of an oval pool |
2005-05-18 |
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John pose la question :
I have an oval pool of which I am trying to find the circumference. it is 38 feet long and 19 feet wide
Penny Nom lui répond. |
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Which is smaller 2^175 or 5^75? |
2005-05-18 |
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Sarah pose la question :
Which is smaller 2175 or 575? without using a calculator.
Claude Tardif lui répond. |
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A six digit answer |
2005-05-18 |
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Angela pose la question :
I have a 6 digit answer that is comprised of only 4 symbols: a square, a circle, a triangle, and an X. How many possible solutions are there and how is the best way to find out what ALL the solutions are?
Penny Nom lui répond. |
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Jobs relating to the topics of ratios and proportions |
2005-05-17 |
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Alexa pose la question :
What are some jobs relating to the topics of ratios and proportions other than architects and map makers?
Walter Whiteley lui répond. |
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Divisibility of a^2 + b^2 |
2005-05-16 |
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Ampa pose la question :
given natural numbers a and b such that a2+b2 is divisible by 21, prove that the same sum of squares is also divisible by 441.
Penny Nom lui répond. |
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What is my acreage? |
2005-05-16 |
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Vonis pose la question :
My property is 65.5 feet by 130 feet. what is my acreage?
Penny Nom lui répond. |
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L'hopital's rule |
2005-05-15 |
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Abraham pose la question :
Find the limit of [(1/(x+4))-(1/4)]/x as x approaches zero.
How do you use l"hopital's rule to find this limit. I know how to do it with multiplying everything by 4(x+4), and getting the answer, -1/16.But how do you apply derivatives with l'hopitals rule to this type of problem?
Penny lui répond. |
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