CALCULUS PRESENTED BY GUO CHENG GUANG（04-44）

11岁郭承光用英文开讲：大学微积分（04-44）

LECTURER:

GUO CHENG GUANG (11 years old, Primary 5 from YUMIN Primary School)

GUO CHENGXI( 8 years old, Primary 2 from YUMIN Primary School)

主讲：郭承光（11岁，育民小学五年级）

助讲：郭承曦（8岁，育民小学二年级）



内容： further differentiation

      导数

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