[再寄小读者之数学篇](2014-12-24 乘积型不等式)

$$ex int f^2g leq Csen{f}_{L^2}^frac{5q-4}{3q-2} sen{p_3f}_{L^q}^frac{q}{3q-2} sen{g}_{L^2}^frac{q-2}{3q-2} sen{ _hg}_{L^2}^frac{2q}{3q-2},quad 2leq q<infty. eex$$ 不过发现没啥用. 嗨...