利用者:Justin545

$(a+b)(a-b)=a^{2}-b^{2}$

(Ident 1)

• $e^{ix}=\cos x+i\sin x$

  (Ident 2)

1. $\sin ^{2}x+\cos ^{2}x=1$

   (Ident 3)

Template:NumBlk

$f'(x)=\lim _{h\to 0}{\frac {f(x+h)-f(x)}{h}}$

(Def.1)

--- 0.00126(second)

$f'(x)=\lim _{x\to a}{\frac {f(x)-f(a)}{x-a}}$

(Def.2)

--- 0.00144(second)

User:Justin545/sandbox/ex

$e^{ix}=\cos x+i\sin x$ (Ident.A)

$f'(x)=\lim _{h\to 0}{\frac {f(x+h)-f(x)}{h}}$ (Def.1)

--- 0.00104(second)

$f'(x)=\lim _{x\to a}{\frac {f(x)-f(a)}{x-a}}$

(Def.2)

--- 0.00114(second)