5*9分之1+9*13分之1+13*17分之1+……+101*105分之1=?
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1/(5*9)+1/(9*13)+...+1/(101*105)=(1/4)*(1/5-1/9)+(1/4)*(1/9-1/13)+...+(1/4)*(1/101-1/105)=(1/4)*(1/5)-(1/4)*(1/9)+(1/4)*(1/9)-(1/9)*(1/13)+...+(1/4)*(1/101)-(1/4)*(1/105)=(1/4)*(1/5)-(1/4)*(1/105)=(1/4)*(1/5-1/105)=(1/4)*(20/105)=1/21
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扫描下载二维码（5乘以9）分之1+（9乘以13）分之1+（13乘以17）分之1+......（101乘以105）分之1=多少?
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（5乘以9）分之1+（9乘以13）分之1+（13乘以17）分之1+......（101乘以105）分之1=1/(5*9)+1/(9*13)+1/(13*17)+....+1/(101*105)=[4/(5*9)+4/(9*13)+4/(13*17)+....+4/(101*105)]/4=[(9-5)/(5*9)+(13-9)/(9*13)+(17-13)/(13*1...
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扫描下载二维码9.5乘以101-9.5怎么简便算?
9.5×101-9.5=9.5×（101-1）=9.5×100=950
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9.5×101-9.5=9.5×(101-1)=9.5×100=950
扫描下载二维码C语言编写程序，求1-3+5-7+.....-99+101的值_百度知道
C语言编写程序，求1-3+5-7+.....-99+101的值
用while和for两种方法编写 计算机二级 大一水平 谢谢您
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&&&&sum=sum+i;&sum=sum-i;&&&&while(i&&&&&&&&&&&&nbsp.h&gt,k=1;&&&&&&&&&&&i=i+2)&&k++;&&&&=101;sum=sum-i,sum=0;;if(k%2==1)&&&printf(&&&&&&&&nbsp:%d&main(){&&&nbsp：#include&&&&&&&&{&&int&else&&&}&k++;;&&i=1;&&&&&nbsp,sum);&&&&&&&&void&i=1;&&&求和为,sum=0;&&&&&&&nbsp:%d&&&&i&&&&&for(i=1;&else&&int&&&nbsp,sum);}&&if(k%2==1)&&&&&sum=sum+i;&&nbsp,k=1;&&main(){&&&&&&&求和为;&&&{&&i=i+2;=101)&&&&&&&&nbsp代码如下;&}//**********************void&printf(&quot
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sum=0.h&quot.;}#include &
printf(&quot,sum,f;102.h&
i++.+101=%d\void main(void){ ;n&102){
f=-f.+101=%d\
sum+=i*f.;1-3+5-7+;
while(i&lt,i=1,f=-1;void main(void){
int i=1;i&lt,sum=0,sum);n&
printf(&stdio.#include &1-3+5-7+,sum);;i+=2){
f=-f.;stdio
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int flag=1.h&int sum=0;}#include &sum=%d&#92,sum );while( i&}printf(&n&sum=%d\int main(){i+=2 ){
sum += i*=101;i&retrun 0;i=1;
flag *= -1;stdio#include &
flag *= -1;
i+=2 ;int main(){int i,sum );=101 ){
sum += i*for( i=1;n&quot.h&int flag=1;;;}printf(&retrun 0;int sum=0
#include&stdio.h&void main(){ int i=1,j=3,k=0,p=0,s; for(i=1;i&=101;i=i+4)
k+=i; for(j=3;j&100;j=j+4)
p+=j; s=k-p; printf(&for:%d\n&,s); while(i&=101) {
k+=i; } while(j&100) {
p+=j; } s=k-p; printf(&while:%d\n&,s);}
#include &iostream&int main(){ int Sum=0; for (int i=1,j=0;i&=101;i+=2,++j)
(j%2==0) ? (Sum+=i) : (Sum-=i) ; cout&&&Sum=&&&Sum&& return 0;}#include &iostream&while(i & -102){
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36+8-40= 4 481.4脳250= 1000 87.00 42..30脳20= 600 18..11+22=33.75梅15 = 5 54..26脳4= 74 94.9+18=27.240梅40 = 6 71.400梅4= 100 19.80-25= 55 12...20+20梅2= 30 46.400梅4+20脳5= 200 6..18-64梅8= 10 22.45+15脳6= 135 2.60脳12= 720 98.65梅13 = 5 53.40脳80 =3200 82.100梅20 = 5 69.48梅16 = 3 84.(80梅20+80)梅4=21 8.45-23=22.18-9=9.23脳11= 253 40.350-80= 270 20..98梅14 = 7 50.400梅80 = 5 83..78梅26 = 4 66.70+(100-10脳5)=120 9.390梅13 = 30 60..0脳518= 0 88.400-80 = 320 81.300脳6= 1800 16.250梅5脳8=400 3.6脳5梅2脳4=60 4.21+42=63.31+62=93..220+80= 300 43..28+56=84..920梅4 = 230 72.200梅25 = 8 56.42+7-29= 20 28.23+46=69.56梅14 =4 52.50梅5 =10 76.80+60梅3=100 25...600梅15 =40 61..120梅24 =5 55.19+38=57.23脳30= 690 99..56-45=11.15脳6= 90 91..10-3=7 15-4=11 20-5=15 25-6=19 30-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91 120-25=95 125-26=99 130-27=103 13+26=39..36脳10=360 90.800梅16 = 50 57...96梅24 =4 85.29+58=87..336+70= 406 34.17+34=51.160脳5= 800 86.60梅8 = 7...25脳9脳4= 900 35..100梅4 =25 70.25+50=75...7脳15=105 95.32脳30= 960 96.15+30=45.200-33脳3= 101 36.80梅40 = 2 68..96梅24 = 4 51. 49.300梅60=5 73.8+16=24 .....10 37.12+24=36.36脳11= 396 32...10+20=30.14+28=42....75-11脳5= 20 27..27+54=81.16+32=48.5脳700=3500 25 -15 -80 = 10 -80 = -70 26 -6 -64 = 20 -64 = -44 27 + 3 -48 = 30 -48 = -18 28 + 12 -32 = 40 -32 = 8 29 + 21 -16 = 50 -16 = 34 30 + 30 + 0 = 60 + 0 = 60 31 + 39 + 16 = 70 + 16 = 86 32 + 48 + 32 = 80 + 32 = 112 33 + 57 + 48 = 90 + 48 = 138 34 + 66 + 64 = 100 + 64 = 164 35 + 75 + 80 = 110 + 80 = 190 36 + 84 + 96 = 120 + 96 = 216 37 + 93 + 112 = 130 + 112 = 242 38 + 102 + 128 = 140 + 128 = 268 39 + 111 + 144 = 150 + 144 = 294 40 -30 -140 = 10 -140 = -130 41 -21 -124 = 20 -124 = -104 42 -12 -108 = 30 -108 = -78 43 -3 -92 = 40 -92 = -52 44 + 6 -76 = 50 -76 = -26 45 + 15 -60 = 60 -60 = 0 46 + 24 -44 = 70 -44 = 26 47 + 33 -28 = 80 -28 = 52 48 + 42 -12 = 90 -12 = 78 49 + 51 + 4 = 100 + 4 = 104 50 + 60 + 20 = 110 + 20 = 130 51 + 69 + 36 = 120 + 36 = 156 52 + 78 + 52 = 130 + 52 = 182 53 + 87 + 68 = 140 + 68 = 208 54 + 96 + 84 = 150 + 84 = 234 55 -45 -200 = 10 -200 = -190 56 -36 -184 = 20 -184 = -164 57 -27 -168 = 30 -168 = -138 58 -18 -152 = 40 -152 = -112 59 -9 -136 = 50 -136 = -86 60 + 0 -120 = 60 -120 = -60 61 + 9 -104 = 70 -104 = -34 62 + 18 -88 = 80 -88 = -8 63 + 27 -72 = 90 -72 = 18 64 + 36 -56 = 100 -56 = 44 65 + 45 -40 = 110 -40 = 70 66 + 54 -24 = 120 -24 = 96 67 + 63 -8 = 130 -8 = 122 68 + 72 + 8 = 140 + 8 = 148 69 + 81 + 24 = 150 + 24 = 174 70 -60 -260 = 10 -260 = -250 71 -51 -244 = 20 -244 = -224 72 -42 -228 = 30 -228 = -198 73 -33 -212 = 40 -212 = -172 74 -24 -196 = 50 -196 = -146 7+14=21 .85梅17 = 5 63.30脳50=1500 100.10+12梅3+20=34 7.400+80 = 480 80..5脳18= 90 93....40脳15= 600 97.96梅4 = 24 78..360梅40= 9 10.600-3脳200=0 45.64梅2 = 32 74..25脳16= 400 30..840梅21 =40 58..72梅24 = 3 62.560梅14 = 40 59.20+40=60.33+66=99..25脳8= 200 39..25-5=20.18+36=54...96梅16 = 6 65.35-25梅5= 30 47.125梅25=5 41.41+18梅2= 50 26.16脳6= 96 15.20脳8脳5= 800 44..40脳20= 800 11.30脳3+8=98 5.40-5脳7= 5 24.70+45=115 13..90脳2= 180 14.26+52=78.78-23=55....22+44=66...160+70=230 21.90梅6 =15 79... 33.51梅17 =3 67.540梅9=60 17.5 77.90梅15 =6 64.64梅4 = 16 75.24+48=72.42梅6+20=27 23.. 29..120脳25= 3000 31...12脳50= 600 38.10脳76= 760 89...30+60=90.24脳3= 72 92.32+64=96
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