Username: pavelpimen
Gender: Male
Member since: February 2, 2009
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High School - 10th Grade
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New Activity for pavelpimen
- Asked a question in Science:
On what basis is established the diagnosis of knee sprain?
- Created a topic in Math:
correct solving of trigonometric problems
- Asked a question in Science:
Prove the identity
cos (pi/5)=[(sqrt 5) + 1]/4
- Asked a question in Science:
How many entities are using rolled up surfaces?
- Asked a question in Science:
What are some examples of invertebrate animals with multicellular structure?
- Joined a group:
Science
- Asked a question in Math:
Calculate the value of the ratio below:...
- Asked a question in Math:
The expression E(n)= 2^(7n+3) + 3^(2n + 1) X 5^(4n+1), n belongs N* is divided...
- Asked a question in Math:
Calculate cos (23pi/12) *sin(pi/12)
- Asked a question in Math:
f(x)=(x-1)(x-3)(x-5)(x-7); f:R->R. Demonstrate that f'(x)=0 has exactly 3 real...
- Asked a question in Math:
Having the function fn(x)=x^n+n*x-1, demonstrate that fn is convex, for any...
- Asked a question in Math:
fm(x)=x^2 +7(m-1)x+m-1 is a family of functions.Which are m values so that the...
- Asked a question in Math:
Calculate E=sin(arcsin1/2)+sin{arccos [(sqrt3)/2]}.
- Asked a question in Math:
Considering functions f:R - R, f(x)= x/(1+x^2) and g:R - R, g(x)=arctgx calculate...
- Asked a question in Math:
f(x)=(x+1)^1/x.
Calculate lim f(x); x->infinity.
- Asked a question in Math:
Find out all linear functions which are increasing and have the structure:...
- Asked a question in Math:
f(x)=ln x - [2(x-1)/x+1]. Prove that if x>1, then
ln x > [2(x-1)/x+1]
- Asked a question in Math:
Find the second grade function if f(-1)=1, f(0)=1 , f(1)=3.
- Asked a question in Math:
Find out the equation of the " d " line. The line is given by the point A( 2,...
- Asked a question in Math:
Find out the median of ABC triangle, which starts from vertex A, where A(1,2),...
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