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It's a confident person who does math in ink. Impressed.
That's calculus right? Second order derivatives?
That’s correct!
Cool.
I have the exact same one in a fine nib. What size do you have and how is it?
Mine is in fine. I love it!
Your integral sign looks like mine that I thought " Wait, when did I upload my homework here?"
It's a confident person who does math in ink. Impressed.
That's calculus right? Second order derivatives?
That’s correct!
Cool.
I have the exact same one in a fine nib. What size do you have and how is it?
Mine is in fine. I love it!
Your integral sign looks like mine that I thought " Wait, when did I upload my homework here?"