273 reputation
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age 27
visits member for 2 years, 10 months
seen Jan 25 at 12:38

Mar
14
awarded  Popular Question
May
13
awarded  Caucus
Apr
17
asked Matrix norm applications?
Mar
12
asked What are the differences between Hilbert's axioms and Euclid's axioms?
Mar
6
asked Is this recurrence relation correct?
Jun
25
awarded  Yearling
Jun
8
awarded  Caucus
May
26
comment How do I simplify this trig expression?
@JoeL. is it possible to use (cos(2x)+cos(3x))⋅cosx ?? i calculated and found (for example,in degrees) cos(15)+cos(30) != cos(45) :(
May
26
asked How do I simplify this trig expression?
May
25
comment How to factor the quadratic polynomial $2x^2-5xy-y^2$?
@TonyK i tried, but it didnt work.. :(
May
25
asked How to factor the quadratic polynomial $2x^2-5xy-y^2$?
May
19
accepted Simplifying trigonometric expression
May
19
comment Simplifying trigonometric expression
At first time, i didnt notice.. :( Thanks a lot!!)
May
19
asked Simplifying trigonometric expression
May
18
asked Calculating $\tan15\cdot \tan 30 \cdot \tan 45 \cdot \tan 60 \cdot \tan 75$
May
18
accepted How did they get this result?
May
18
comment How did they get this result?
@chris Thanks! It's OK.
May
18
asked How did they get this result?
May
15
accepted How would you solve this system of equations?
May
15
comment How would you solve this system of equations?
Thanks!! I've solved it. v=-2; x= 2; y= 1; z= 3; u= -1;