This is a Ditloid.
The answer is 0-6-0 Thomas the Tank Engine.
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6000/100
Use the product and chain rules: d/dt te^(-t²) = (d/dt t)e^(-t²) + t(d/dt e^(-t²)) = 1 × e^(-t²) + t × e^(-t²) × d/dt -t² = e^(-t²) (1 + t × -2t) = (1 - 2t²)e^(-t²)
6/100
.060
1.06 million = 1 060 000