Does there exist a constant C>0 such that
k a sin√(y * t* x^2)
∫ t * x^2 * ∫ exp(y) * ---------------------dy dx <C
0 0 √y
for 0<k<<1 , t>0 , a>0
我覺得那個 exp(y) 很麻煩
但又丟不掉
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