\(\displaystyle\left\langle f(x), g(x)\right\rangle_{w(x),x\in(a,b)}:=\int^{x=b}_{x=a}f^{*}(x)g(x)w(x)dx\)
其中,\(w(x)\)是权重函数(weight function),\((a,b)\)是函数内积的定义域,\(f^{*}(x)\)是函数\(f(x)\)的复数共轭
- 权重函数一般是1
\(\displaystyle\left\langle f(x), g(x)\right\rangle_{w(x),x\in(a,b)}:=\int^{x=b}_{x=a}f^{*}(x)g(x)w(x)dx\)
其中,\(w(x)\)是权重函数(weight function),\((a,b)\)是函数内积的定义域,\(f^{*}(x)\)是函数\(f(x)\)的复数共轭
- 权重函数一般是1
status | not learned | measured difficulty | 37% [default] | last interval [days] | |||
---|---|---|---|---|---|---|---|
repetition number in this series | 0 | memorised on | scheduled repetition | ||||
scheduled repetition interval | last repetition or drill |