0.01+0.02+0.03+0.04……+0.97+0.98+0.99
=1/100(1+2+3+.97+98+99)
1+2+3+.97+98+99=(1+100)+(2+99)+.(50+51)=
101×50=5050 -99=4951
0.01+0.02+0.03+0.04……+0.97+0.98+0.99=1/100*4951=49.51
俊狼精英为您解答
0.01+0.02+0.03+0.04……+0.97+0.98+0.99
=1/100(1+2+3+.97+98+99)
1+2+3+.97+98+99=(1+100)+(2+99)+.(50+51)=
101×50=5050 -99=4951
0.01+0.02+0.03+0.04……+0.97+0.98+0.99=1/100*4951=49.51
俊狼精英为您解答