用R程序编程求下列的值，正确的命令是 （ ）[img=248x30]180398c761aadcb.jpg[/img]
A: (log(sqrt(27))+log(8)-log(sqrt(1000)))/log(1.2)
B: log10(sqrt(27))+log10(8)-log10(sqrt(1000))/log10(1.2)
C: (log10(sqrt(27))+log10(8)-log10(sqrt(1000)))/log10(1.2)
D: [log10(sqrt(27))+log10(8)-log10(sqrt(1000)]/log10(1.2)
A: (log(sqrt(27))+log(8)-log(sqrt(1000)))/log(1.2)
B: log10(sqrt(27))+log10(8)-log10(sqrt(1000))/log10(1.2)
C: (log10(sqrt(27))+log10(8)-log10(sqrt(1000)))/log10(1.2)
D: [log10(sqrt(27))+log10(8)-log10(sqrt(1000)]/log10(1.2)
举一反三
- 用R程序编程求下列的值，正确的命令是 （ ）[img=273x30]180398c76b70239.png[/img] A: x<-log(2);y<-log(3);100^(2*x-y) B: x<-log10(2);y<-log10(3);100^(2*x-y) C: x<-log10(2);y<-log10(3);100^(2x-y) D: x<-log(2);y<-log(3);100^(2x-y)
- 选择下列函数运行后的输出NestList[Log,10,3] A: {Log[10],Log[Log[10]],Log[Log[Log[10]]]} B: {10,Log[10],Log[Log[10]],10+Log[Log[Log[10]]]} C: {Log[10],Log[Log[10]],Log[Log[Log[Log[10]]]]} D: {10,Log[10],Log[Log[10]],Log[Log[Log[10]]]}
- log10=( )(10)
- 已知x为一个向量,计算ln(x)的matlab命令是 A: ln(x) B: log(x) C: Ln(x) D: log10(x)
- 用赋值语句给定x数据，计算[img=181x29]18031f69d890fe4.png[/img]对应的MATLAB表达式是（ ） A: sqrt(7*sin(3+2*x)+exp(2)*log(3)) B: sqrt(7sin(3+2x)+exp(2)log(3)) C: sqrt(7*sin(3+2*x)+e^2*log(3)) D: sqrt(7sin(3+2x)+e^2log(3))