IP属地:河北
1,划开 2,除以x 3,y'cosy=(siny)' 然后令siny=u 5,代入
ORG 000H SJMP MAIN ORG 000BH ;定时/计数器T0的入口地址 SJMP TIME0 MAIN: MOV TMOD,...
2.Translatethepassage To improve our English,it is critical to do more r...
1.设f(x)二阶连续可导,且f"(x)≠0 , 又f(x+h)=f(x)+f(x+θh)h (0<θ<1)证明:lim θ=1/2 证:
#include“reg52.h” //头文件,包含各种寄存器定义及函数库 unsigned char pwm; time0() in...
#include“reg52.h” //头文件,包含各种寄存器定义及函数库 time0() interrupt 1 using ...
exp:e pi:π log10(X):以十为底的log <1> 例:x^2-2x-8=0 先要定义X solve(x^2-2...
sin(a+b)=sinAcosB+sinBcosA sin(a-b)=sinAcosB-sinBcosA cos(a+b)=cosAcosB-...
解:当蜻蜓和蝉一样的情况时:(根据翅膀) 20÷(2+1)=6......2→{一个蜻蜓 ……① 或两个蝉...