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lookagain
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lookagain
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08-22-2010
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03:42 PM
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03-22-2018,
09:53 PM
lookagain
replied to a thread
e^pi or pi^e
in
Intermediate/Advanced Algebra
e^x \ge x + 1. e^x = x + 1 \ \ only where x = 0.
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11 replies | 188 view(s)
03-20-2018,
02:55 PM
lookagain
replied to a thread
what is the integral of 2^(2x)? need help tonight, exam is tomorrow
in
Calculus
y=22x/(2ln2) + C The derivative of 22x \ \ne \ 2e2x
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21 replies | 536 view(s)
03-20-2018,
02:05 PM
lookagain
replied to a thread
Divisibility
in
Intermediate/Advanced Algebra
For s an integer, show that 360 divides \ s^2(s^2 - 1)(s^2 - 4). Or: For s an integer, show that \ s^2(s^2 - 1)(s^2 - 4) \ is divisible by...
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6 replies | 127 view(s)
03-14-2018,
05:20 PM
lookagain
replied to a thread
If 2^x = 10, then how to calculate the value of 'x'?
in
Intermediate/Advanced Algebra
On the left-hand side of the equation, the "x" should not be as low as it is. It should on the same level as "log." a^log_ax \ = \ x. \ \ \...
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36 replies | 982 view(s)
03-14-2018,
10:40 AM
lookagain
replied to a thread
If f(x) = 2x-5x^2 and g(x) = 5x+2, what is f(4)?
in
Intermediate/Advanced Algebra
This is not a teaching site. You are to learn that in the classroom. Tutors/helpers are to coach/reinforce what you have already gone over and...
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16 replies | 336 view(s)
03-12-2018,
12:56 PM
lookagain
replied to a thread
Integral of 1/(2x+1): different methods give different results??
in
Calculus
The natural log will take the absolute value bars in conjunction here: (1/2)*ln|2x+1| + C
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4 replies | 180 view(s)
02-26-2018,
11:03 AM
lookagain
replied to a thread
Find a whole number that is both perfect square and cube found between 2000 and 10000
in
Beginning Algebra
"Brute force" was stated, but it is not required. Because it is a perfect square, it is of the form \ N^2. Because it is also a perfect cube,...
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3 replies | 225 view(s)
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