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| revprev | Admin | May 13'23 at 18:55 | +4 | m | |
| revcur | Admin | (Created page with "'''Key: C''' In general, <math display="block">\begin{aligned} E\left(X^{2}\right)-E\left[(X \wedge 150)^{2}\right] &=\int_{0}^{200} x^{2} f(x) d x-\int_{0}^{150} x^{2} f(x...") | May 13'23 at 18:52 | +763 |