Find all solutions of the equation. (Enter your answer in the form a + bπn, where a[0, 2π), b is the smallest possible positive number, and n represents any integer. Round a to four decimal places.)
cot(x)=-0.237
x=?
我输入 arccot(-0.237)+ nπ 是错的...
a + bπn应该arccot(-0.237)+ 0.5πnB要最小,0.5合适N是整数 (N∈N)A在四位的小数点(经不正当推算得)13.3371应该是13.3371+0.5πn---------arccot是-0.5π至0.5π的,而COT的负值区是0.5π至π或1.5π至2π故加0.5Nπ才合...