Mathematics
Senior High
Resolved

黄色で引いてある部分はどうやって変形しているんでしょうか。

• =1+100C1 102+100C2 10+100C3 106+100 C4 108+...+10200 =1+100C1 102+100C2 104+10° (100C3+100C4-10²++10194) V ここで, a=100C3+100C4・102+ ...... + 10194 とおくとは自然数で

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