题目2单选题
<img src="https://tihai-oss-cloud.itihey.com/img/ae43539653593066afde89974d379ea2.png">A. syms x y z [x y z]=solve(x+y+z=10, 3*x+2*y+z=14, 2x+3*y-z=1)B. syms x y z [x y z]=solve(x+y+z=10, 3*x+2*y+z=14, 2*x+3*y-z=1)C. syms x y z [x y z]=solve(x+y+z==10, 3*x+2*y+z==14, 2*x+3*y-z==1)D. syms x y z [x y z]=solve(x+y+z==10, 3*x+2*y+z==14, 2x+3y-z==1)
题目5单选题
求不定积分<img src="https://tihai-oss-cloud.itihey.com/img/535a4ce0b26c549d25e9ca692d8489d9.webp">,程序如下: >>clear,clc >>syms x >> %求定积分A. inf( tan(x), x, -2, 1 )B. int( tan(x), x, -2, 1 )C. int( tan*x, x, 1, -2 )D. int( tan(x), x, 1, -2 )