计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/14 11:28:57
计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98
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计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98
计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98

计算0.2+0.4+0.6+0.8+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98
原题应该是0.02+0.04+0.06+0.08+0.10+0.12+0.14+0.16+0.18+0.20+0.22+...+0.98吧?
原式=0.02*(1+2+……+49)
=0.02*(1+49)*49/2
=24.5