問題：次の式を計算せよ
- (1) \( \displaystyle \int_{}^{} \log x dx \)
- (2) \( \displaystyle \int_{}^{} x^2\sin x dx \)
- (3) \( \displaystyle \int_{}^{} \sin x\cos x dx \)
- (4) \( \displaystyle \int_{1}^{6} x\log x dx \)
- (5) \( \displaystyle \int_{0}^{4} (2 - x)^2 e^x dx \)