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49m
comment How to compute: $(89^{3} \pmod {79})^{4}\pmod{26}$?
@user2741941, Normal division
1h
comment How to compute: $(89^{3} \pmod {79})^{4}\pmod{26}$?
@user2741941, Yes, sorry for the confusion.
1h
comment How to compute: $(89^{3} \pmod {79})^{4}\pmod{26}$?
@user2741941, It's often implied & we don't write modulo in each step
1h
comment How to compute: $(89^{3} \pmod {79})^{4}\pmod{26}$?
@user2741941, See mathworld.wolfram.com/Congruence.html
1h
comment Find $S=\frac{1}{2}+\frac{3}{2^2}+\frac{5}{2^3}+\frac{7}{2^4}+…+\frac{2n-1}{2^n}+…$
@OriaGruber, See en.wikipedia.org/wiki/…
11h
comment Maximum of $\sin A\sin B\cos C+\sin B\sin C\cos A+\sin C\sin A\cos B$ in triangle
@boaten, How about this?
13h
comment Largest possible value of a side
@Sawarnik, I'd request you to answer yourself and may accept that
1d
comment Constructively solving a trig equation
@chubakueno, Have you noticed math.stackexchange.com/questions/951464/…? Here $\sin x,\sin(18^\circ+x)$ can be $\pm\dfrac12$. Also here the accepted answer does not satisfy your requirement either
1d
comment Constructively solving a trig equation
@chubakueno, See math.stackexchange.com/questions/951464/…
1d
comment $\prod\limits_{i=1}^n \frac{3a_i+2}{2a_i+1}, a_i\geq 1$
$$2(3x+2)-3(2x+1)=?$$
2d
comment How to show that this complex equation has 10 non real roots and how to express them
@TheArtist, $$0\le6n\le11\iff n=0,1$$
2d
comment Proving directly that ($a+b)^3 \equiv a^3 + b^3 \mod 3$
$$3n\equiv0\pmod3$$ for any integer $n$
2d
comment Can anyone explain how to do this number?
@akshay, We have three equations with three unknowns , right?
2d
comment Can anyone explain how to do this number?
@akshay, Yes:) Then we can find $\dfrac1x$
2d
comment Evaluate the sum.
Wish I knew the mistake here
Oct
27
comment How to express $z^8 − 1$ as the product of two linear factors and three quadratic factors
@TheArtist, We can set $k=0,\pm1,\pm2,\pm3,4$ to utilize the formula
Oct
27
comment How to Solve this Arithmetic Progression Question?
@hypergeometric, This does not need elimination of $ab$
Oct
27
comment why is $\sum_0^{n-1} k(k-1) = n(n-1)(n-2)/3$
$$\sum_{k=0}^nk(k-1)=\sum_{k=0}^n k^2-\sum_{k=0}^nk$$ See math.stackexchange.com/questions/183316/…
Oct
27
comment How do you find out the range of values when dealing with simultaneous equations?
@Kelly,Why do you want "where I plug " $x$?
Oct
27
comment How do you find out the range of values when dealing with simultaneous equations?
@Kelly, You need to arrange as $$Ax^2+Bx+C=0$$ Have you heard of discriminant ?