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1h
comment Solving a second-degree exponential equation with logarithms
@user146046, I think, you meant this
1h
comment Solving a second-degree exponential equation with logarithms
@user146046, $$x=\frac{\ln(-5)}{\ln8}$$ is in natural logarithm, right?
2h
comment Problem with simultaneous equations
@Jeremy, $$h(x-y)=x+y-1\implies2(x-y)=x+y-1\iff x-3y+1=0$$
4h
comment Can someone explain why $x^{\log(a)} = a^{\log(x)}$?
@sanjab, What if the base of $\log a$ is not $e?$
12h
comment What is the best book to learn coordinate geometry
archive.org/details/elementsofcoordi00lone
13h
comment Identity $\frac{\cos(5x)-\cos x}{\sin 5x-\sin x}=-\tan (3x)$
Use mathworld.wolfram.com/ProsthaphaeresisFormulas.html
20h
comment If $a,b,c\in\mathbb{R^+}$ such that $ abc = 1 $ and $ ab + bc + ca = 5 $. Prove that $ 17/4 \leq (a+b+c)\leq 1+ \sqrt{32}. $
Can you please try math.stackexchange.com/questions/425187/…
20h
comment Existence of solution to Congruence relation $(x^2-2)(x^2-6)(x^2-3) \equiv 0\pmod p$
@barto, Thanks for your insightful feedback
1d
comment What is the period of $\sin 2\theta + \sin \frac{\theta}{2}$
@Simon, math.stackexchange.com/questions/897987/…
1d
comment existence of solution to congruence $x^4 \equiv -4 \pmod p$
@MS93, Please find the edited vesrion
1d
comment Existence of solution to Congruence relation $(x^2-2)(x^2-6)(x^2-3) \equiv 0\pmod p$
@barto, Consider $(x,6)=1\iff x\equiv\pm1\pmod6$
2d
comment Evaluating $\int_0^1 \frac {x^3}{\sqrt {4+x^2}}\,dx$
@Mathemagician1234, Whenever, we have $$\int x^{2n+1}(\sqrt{a^2+x^2})^m\ dx$$ we can try this
2d
comment Evaluating $\int_0^1 \frac {x^3}{\sqrt {4+x^2}}\,dx$
@XihaiLuo, See math.stackexchange.com/questions/1124550/…
2d
comment Finding an Expression for the Difference of Roots of the Quadratic Equation
@SamamaFahim, That assumption should be included
2d
comment Finding an Expression for the Difference of Roots of the Quadratic Equation
@SamamaFahim, The last part is the condition and the other condition as in the answer :$\alpha,\beta$ must be real
2d
comment Finding an Expression for the Difference of Roots of the Quadratic Equation
@SamamaFahim, When we will have $x=-x$
2d
comment The divisibility of $a^p-1$ by $a-1$ and by $(a-1)^2$
@pranav, The operator is not $=,$ but $\equiv$ the following $p+1-2=p-1$ contain $d^2$ as a multiplicand
Jan
28
comment Simple complex analysis inverse
Try this method math.stackexchange.com/questions/1121059/…
Jan
27
comment Complex hyperbolic Trigonometry
@columbus8myhw, Agreed & the current version is also technically correct
Jan
27
comment Complex hyperbolic Trigonometry
@phandaman, How about this?