∫te7t dt\int te^{7t}\:dt∫te7tdt
6−15+28−15+17−16−9+136-15+28-15+17-16-9+136−15+28−15+17−16−9+13
(−3x4−5x3+4x)(−3x4)\left(-3x^{4}-5x^{3}+4x\right)\left(-3x^{4}\right)(−3x4−5x3+4x)(−3x4)
−4x2+238-4x^2+238−4x2+238
9a2−369a^2-369a2−36
−7−1+2-7-1+2−7−1+2
2y′+6y+4=02y'+6y+4=02y′+6y+4=0
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