Writing Mathematical Formulas on the Forum
I think that everybody will agree that
{(\sqrt{9+sqrt{80}}+\sqrt{9-\sqrt{80}})^2} is much easier to understand than (sqr root of (9 +sqr root of 80)+sqr root of (9 - sqr root 80))^2.
So, in order to help you with the questions you post more efficiently please use the following guide to write math formulas.
In most cases you'll just need to do
2-3 simple steps:Simple Formulas
How to make 7x^2+5(x+3)>1 to look like
7x^2+5(x+3)>1Step 1: Highlight 7x^2+5(x+3)>1;
Step 2: Press
m button.
Fractions
How to make (x+3)/(x+5)>0 to look like
\frac{x+3}{x+5}>0:
Step 1: Highlight the fraction (x+3)/(x+5);
Step 2: Press
fraction button;
Step 3: Now, highlight the whole expression and press
m button.
Square roots
How to make (x+5)^(1/2)<17^(1/2) to look like
\sqrt{x+5}<\sqrt{17}:
Step 1: Highlight x+5 and press
square_root button, then highlight 17 and press
square_root button again;
Step 2: Now, highlight the whole expression and press
m button.
Other Useful Symbols
Another Way of Writing Fractions:How to make (a+b)/c to look like
\frac{a+b}{c}Step 1: Write \frac{a+b}{c}, (note that numerator and denominator must be enclosed in
{ } and you must write out
\frac to tell the system that it is a fraction);
Step 2. Highlight the whole expression and press
m button.
ExponentsHow to make x^12 to look like
x^{12}Step 1: Write
x^{12}, (note that multi-digit powers must be enclosed in
{ });
Step 2. Highlight the whole expression and press
m button.
RootsHow to make 3rd root of x^2 to look like
\sqrt[3]{x^2}Step 1: Write
\sqrt[3]{x^2}, (note that 3 must be enclosed in
[ ] and 2 must be enclosed in
{ });
Step 2. Highlight the whole expression and press
m button.
Inequalitiesx\approx{3}: write x\approx{3} and press
m button (note that 3 must be enclosed in
{ }).
x\leq5: write x\leq{5} and press
m button.
x\geq3: write x\geq{3} and press
m button.
x\neq0: write x\neq{0} and press
m button.
Subscriptx_1: write x_1 and press
m button. If a subscript is more than one-digit number, for example
x_{15} then write x_{15} and press
m button (note that such kind of subscripts must be enclosed in
{ }).
Geometry\pi: write \pi and press
m button;
\angle: write \angle and press
m button;
90^{\circ}: write 90^{\circ} and press
m button;
\alpha: write \alpha and press
m button;
\triangle: write \triangle and press
m button.
or PM the
Math Forum Moderator,
Bunuel.
_________________
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