Question

how are these fonts use in brainy​

Answer 1

Answer:

I don't know

I also wanna know it di

Answer 2

These are LaTeX

For eg : INPUT

\large\underline{\sf{Solution-}}

copy the text

Paste in the area where we do the equations. see attachment.

Tap Insert Formula

OUTPUT will be

$\large\underline{\sf{Solution-}}$

or write

\huge\mathfrak{Answer}

Do the above procedure.

OUTPUT will be

$\huge\mathfrak{Answer}$

Understood, you need to practise little bit to get familiar. :)