 |
|
|
|
|
|
|
|
|
An equation involving x to the x |
2000-07-22 |
|
From Joy Peter:
I am joy, a teacher teaching Maths at the secondary level and while solving a sum came to this stage when i got xx (1 + log x) = 0, by which we can conclude that xx = 0 or 1 + log x = 0. If xx = 0, than what should be the value of x? I feel that the value of x should then be 0 (zero) but then how do I explain this to the students as we also know that anything to the power of 0 is 1 but here 0 raised to 0 is 1. If this is not defined then how do I explain this?
Answered by Penny Nom. |
|
|
|
|
|
|
n! = 42(n-2)! |
2000-07-21 |
|
From Damon Bailey:
Solve n! = 42(n-2)!
Answered by Paul Betts. |
|
|
|
|
|
|
10,000! |
2000-07-21 |
|
From Lauren:
Hi I was just wondering if you could tell me how many zeros are in 100,000! (factorial.)
Answered by Denis Hanson. |
|
|
|
|
|
|
L'Hospital's Rule |
2000-07-19 |
|
From Dan Krymkowski:
The limit of the following as x goes to infinity is 2*y. Y is a constant. lim 2*x*log(x/(x-y)) = 2*y
Answered by Harley Weston. |
|
|
|
|
|
|
Completing a square |
2000-07-10 |
|
From Lexa Michaels:
How do you complete a square? the textbook question is: x 4 + 64
Answered by Penny Nom. |
|
|
|
|
|
|
Patterning and Sequencing |
2000-07-05 |
|
From Michael Jellis:
What would be the next two terms? 1.0,0.5,0.6,0.75,0.8,___,____ please explain!!! I am completely baffled and need all the help I can get!
Answered by Claude Tardif. |
|
|
|
|
|
|
Five times a cube equals three times a fifth power |
2000-07-05 |
|
From Harman Chaudhry:
Which is the smallest 10-digit number to be five times the cube of one number and also three times the fifth power of another?
Answered by Penny Nom. |
|
|
|
|
|
|
Word addition |
2000-07-05 |
|
From Harman Chaudhry:
What is the value of DISHES if SEE + THE + WAITER + WASHES = DISHES. In addition, I know there is a name for these types of problems--what are they actually called?
Answered by Chris Fisher. |
|
|
|
|
|
|
Exposant à la 0 |
2000-07-04 |
|
From Sylvie:
J'aimerais savoir combien fait 0 exposant 0.
Answered by Claude Tardif. |
|
|
|
|
|
|
Simplify 21+2[3z+5(3z+8)] |
2000-07-02 |
|
From Dennis Dyer:
My daughter has a math problem that I can't help her with. The problem is 21+2[3z+5(3z+8)] I can get the answer 101 +36z but I can't show her the correct way to write it out. Would you please show the correct way to show her work...
Answered by Penny Nom. |
|
|
|
|
|
|
A trig question |
2000-07-01 |
|
From Will:
An open rectangular tank a units deep and b units wide holds water and is tilted so that the base BC makes an angle theta with the horizontal. When BC is returned to the horizontal, who that the depth of the water is (a squared) * cot theta div 2b units
Answered by Harley Weston. |
|
|
|
|
|
|
Parallel tangents |
2000-06-30 |
|
From Ebony Indalecio:
I need to prove the theroem: Tangents to a circle at the end points of a diameter are parallel.
Answered by Walter Whiteley. |
|
|
|
|
|
|
Tiling a floor |
2000-06-27 |
|
From Carolyn Clarkston:
A square tile measures 6 inches by 6 inches. What is the least number of tiles needed to cover a rectangular floor area of 9 feet by 12 feet?
Answered by Walter Whiteley. |
|
|
|
|
|
|
Calculator and telephones keypads phones |
2000-06-27 |
|
From Thomas Smith and Veronica Yates-Riley:
On a keyboard, why is the number "7" on the top of the keypad as opposed to the number "1" at the top a telephone keypad?
Answered by Penny Nom. |
|
|
|
|
|
|
An Area |
2000-06-26 |
|
From Frank:
Can you tell me what the sq. ft. are of and area measuring:
__________58____________
| |
| |
| |
| |
| |
76 | 70 |
| |
| |
|_____21________ |
Answered by Harley Weston. |
|
|
