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2d
answered Mathematics Radical Numbers Problem
2d
answered Help with primitive function
2d
revised Limit to infinity with natural logarithms
rolled back to a previous revision
2d
comment Limit to infinity with natural logarithms
@BrianJ, Do you understand the difference between your edition & my original answer?
Jul
30
comment proving a inverse trigonometric expression
WLOG try with $\arctan \dfrac xa=A, \arcsin\dfrac ba=B$
Jul
30
revised Limit to infinity with natural logarithms
added 284 characters in body
Jul
30
comment Prove that type question of Trigonometric Identities
Related : math.stackexchange.com/questions/757497/…
Jul
30
comment Solve $\sin A +\sin 2A +\sin 3A + \sin 4A = 0$, for $0 \leq A \leq 180$
Related : math.stackexchange.com/questions/1341096/…
Jul
30
awarded  Nice Answer
Jul
30
comment Find the equation of the circle.
@lnuyaki, $(5,5)$ will be midpoint of $(1,2)$ and the other center, right?
Jul
30
comment Find the equation of the circle.
@Lulu, Google to find the condition
Jul
30
comment Find the equation of the circle.
@Lulu, Have you understood my method?
Jul
30
comment Find the equation of the circle.
@Lulu, What are $P_1,P_2,P_3$?
Jul
30
comment how can i prove this trigonometry equation
@lau, See mathworld.wolfram.com/ProsthaphaeresisFormulas.html
Jul
30
answered Limit to infinity with natural logarithms
Jul
30
answered Find the equation of the circle.
Jul
30
answered Question on Quadratic Equations.11
Jul
29
comment New Idea to prove $1+2x+3x^2+\cdots=(1-x)^{-2}$
@Khosrotash, Please pinpoint your confusion.
Jul
29
comment AMT - Three whole numbers add up to 149 and multiply to give 987. What is the largest of the three number
Check with combinations $1,3,7,21,47,141,329,987<149$ to get $$1,7,141$$
Jul
29
comment Why in order to have the greatest term in the expansion of$ (1 + x)^n$, $x$ can't be greater than unity?
See math.stackexchange.com/questions/722952/…