总述:本次共解1题。其中
☆算术计算1题
〖1/1算式〗
作业:求算式 3/1+0.15+3*(1+8%)/(1+15%)^2+3*(1+8%)^2/(1+15%)^3+20/(1+15%)^3 的值.
题型:数学计算
解:
3/1+0.15+3*(1+8%)/(1+15%)^2+3*(1+8%)^2/(1+15%)^3+20/(1+15%)^3
=3/1+0.15+3*1.08/(1+15%)^2+3*(1+8%)^2/(1+15%)^3+20/(1+15%)^3
=3/1+0.15+3*1.08/1.15^2+3*(1+8%)^2/(1+15%)^3+20/(1+15%)^3
=3/1+0.15+3*1.08/1.15^2+3*1.08^2/(1+15%)^3+20/(1+15%)^3
=3/1+0.15+3*1.08/1.15^2+3*1.08^2/1.15^3+20/(1+15%)^3
=3/1+0.15+3*1.08/1.15^2+3*1.08^2/1.15^3+20/1.15^3
=3/1+0.15+3*1.08/1.3225+3*1.08^2/1.15^3+20/1.15^3
=3/1+0.15+3*1.08/1.3225+3*1.1664/1.15^3+20/1.15^3
=3/1+0.15+3*1.08/1.3225+3*1.1664/1.520875+20/1.15^3
=3/1+0.15+3*1.08/1.3225+3*1.1664/1.520875+20/1.520875
=3+0.15+3*1.08/1.3225+3*1.1664/1.520875+20/1.520875
=3+0.15+3.24/1.3225+3*1.1664/1.520875+20/1.520875
=3+0.15+2.449905+3*1.1664/1.520875+20/1.520875
=3+0.15+2.449905+3.4992/1.520875+20/1.520875
=3+0.15+2.449905+2.300781+20/1.520875
=3+0.15+2.449905+2.300781+13.150325
=3.15+2.449905+2.300781+13.150325
=5.599905+2.300781+13.150325
=7.900686+13.150325
=21.051011 答案:3/1+0.15+3*(1+8%)/(1+15%)^2+3*(1+8%)^2/(1+15%)^3+20/(1+15%)^3=21.051011你的问题在这里没有得到解决?请到 热门难题 里面看看吧!