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• 09-17-2018, 09:59 PM
Don't be so lazy, please pick some values for A and B and see if the inequality holds each time. Of course, if they do then you only have a...
7 replies | 98 view(s)
• 09-17-2018, 09:36 PM
5 replies | 113 view(s)
• 09-17-2018, 09:29 PM
The circumference, being a length, is linear; ie it can be measured against a ruler. So yes, if you cut a string that is in the form of a circle and...
5 replies | 72 view(s)
• 09-17-2018, 01:45 AM
If r = (2/9)^2, then the series would have been (2/9)^2 + (2/9)^4 + (2/9)^6 + (2/9)^8 +.... Now if you felt that the series was (2/9)^2 + (2/9)^3...
8 replies | 173 view(s)
• 09-17-2018, 01:01 AM
You did NOT multiply AX on the left by C-1 !!!!
9 replies | 162 view(s)
• 09-17-2018, 12:58 AM
Good job!
9 replies | 162 view(s)
• 09-16-2018, 11:45 PM
That's the last straw. Math and proofs go hand in hand. Seriously go sit in the corner and think about what you said. I respect your math ability but...
10 replies | 365 view(s)
• 09-16-2018, 11:41 PM
To get the best help possible can you please inform us which course you are taking and what type of techniques you learned about showing that the gcd...
2 replies | 90 view(s)
• 09-16-2018, 11:34 PM
Yes, thanks for pointing that out!!
5 replies | 91 view(s)
• 09-16-2018, 11:33 PM
I probably agree with you (I did not give it much thought). I just wanted to point out that anything divided by infinity is not 0.
6 replies | 118 view(s)
• 09-16-2018, 11:28 PM
−3 ≤ (3  5x)/3 < 3/8 . You want to get x alone in the middle. You have three sides in this equation, the left hand side, the middle and the right...
5 replies | 91 view(s)
• 09-16-2018, 11:01 PM
If your teacher said that the statement above is wrong, then I have to agree with your teacher as ∞/∞ does not necessarily = 0. In fact if you give...
6 replies | 118 view(s)
• 09-15-2018, 08:41 PM
I think that you did not state the whole problem, so please do so. Thanks. Also, do you mean solve for X?
9 replies | 162 view(s)
• 09-15-2018, 08:40 PM
I see your question but you failed to show what exactly you need help with, that is where are you stuck?
5 replies | 143 view(s)
• 09-15-2018, 08:35 PM
What is the x matrix you referred to?
3 replies | 89 view(s)
• 09-15-2018, 08:26 PM
You are not getting the correct result because S\neq a-1/r, rather S = a/(r-1). Please try again and do not use a calculator!
8 replies | 173 view(s)
• 09-15-2018, 08:22 PM
By the distance formula, the solution is the set of all points that are exactly sqrt(2) units from a circle. This actually describes a circle.
5 replies | 134 view(s)
• 09-15-2018, 08:14 PM
When you solve for y, in the end there should only be a y on one side of the equal or inequality sign. So continue... Alternatively you can think...
6 replies | 117 view(s)
• 09-15-2018, 08:05 PM
You probably are correct. I am surprised that the OP could not see that the division is not a constant as the diameter is constant and the length of...
7 replies | 121 view(s)
• 09-14-2018, 09:23 PM
Looks to me that you wrote 1/(4PiDd)
7 replies | 286 view(s)
• 09-14-2018, 09:13 PM
As long as the arrow (of the less than or greater than symbols) points to the smaller value it is ok, that is it is not wrong. I agree with mmm444bot...
5 replies | 202 view(s)
• 09-14-2018, 08:58 PM
I hope that no one minds that I solve this problem for the student. Two lines are parallel if they have the same slope. In y= 4x-8, 4 is the slope...
4 replies | 161 view(s)
• 09-14-2018, 08:51 PM
Looks good to me. Good job!
2 replies | 69 view(s)
• 09-14-2018, 12:27 AM
But your result is a constant. Shouldn't the cost of shipping a 3lb package be different from shipping a 5lb package? Where is the flat fee of \$3 for...
4 replies | 175 view(s)
• 09-13-2018, 11:53 PM
You should write everything in terms of sines and cosines, separate the sines and cosines and then get the same angle above or below what is in sine...
3 replies | 129 view(s)
• 09-11-2018, 07:57 PM
If S(x) represents the number of sales in year x, with x = 0 corresponding to 1982, then x=1 corresponds to what year? If S(x) represents the number...
2 replies | 93 view(s)
• 09-11-2018, 07:49 PM
I think you should go in the corner for 4^1/2 minutes instead.
15 replies | 17677 view(s)
• 09-11-2018, 07:41 PM
Jomo replied to a thread AP Calculus AB vs Calculus? in Calculus
AP Calc AB is a watered down calculus course which is taught in high school. Calculus 1 is a rigorous (or at least should be) course taught in...
1 replies | 71 view(s)
• 09-08-2018, 12:34 PM
A google search will turn up problems to do.
4 replies | 185 view(s)
• 09-06-2018, 09:10 PM
Jomo replied to a thread Jomo Denis MarkBot in Math Odds & Ends
Please don't tell me there is someone else like Denis.
7 replies | 207 view(s)
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