1.求定义域:y=√(81-x^2) +log2 (2sinx-√2)

问题描述:

1.求定义域:y=√(81-x^2) +log2 (2sinx-√2)

81-x^2≥0 -9≤x≤9
2sinx-√2>0 2kπ+π/4