Reputation
388
Top tag
Next privilege 500 Rep.
Access review queues
Badges
5 24
Impact
~37k people reached

Oct
2
accepted Counting Methods?
Oct
2
comment Counting Methods?
Yea.I don't know about "n choose k". Can you please elaborate more? I appreciate it. Sorry for my lack knowledge.
Oct
2
comment Counting Methods?
1) 2 ways to choose- because there is only 11, so if you choose 2 times it is 10. Do you mean like this? thx
Oct
2
asked Counting Methods?
Sep
30
comment equation of the tangent to the following curves?
sorry! how do you get $y=-4x-(-4)(-1)+8$ ?
Sep
30
comment equation of the tangent to the following curves?
fantastic answer! Thanks alot. Sorry for my bad question. Now I fully understood~ thx @AméricoTavares
Sep
30
accepted equation of the tangent to the following curves?
Sep
29
revised equation of the tangent to the following curves?
added 23 characters in body
Sep
29
comment equation of the tangent to the following curves?
1. $2x-2$ but i don't know 2?
Sep
29
comment equation of the tangent to the following curves?
can you please explain in a step? thx~ @J.M.
Sep
29
asked equation of the tangent to the following curves?
Sep
29
comment differentiation of Polynomials
thx! for that @ArturoMagidin I will not use next time!
Sep
29
awarded  Supporter
Sep
29
accepted differentiation of Polynomials
Sep
29
comment differentiation of Polynomials
ok! I understood now <br> $2x^3-4x$ <br> $= 6x^2-4$
Sep
29
comment differentiation of Polynomials
but the answer is $6x^3-4$
Sep
29
comment differentiation of Polynomials
but the answer is 6x^3-4
Sep
29
comment differentiation of Polynomials
but the answer is 6x^3-4
Sep
29
revised differentiation of Polynomials
added 77 characters in body
Sep
29
comment differentiation of Polynomials
ok! I get it~ thx