作业帮函数y=lg [(x²+2x)/(x²+2x+3)]的定义域是?同时大于0时:x²+2x＞0 x²+2x+3＞0 解得(x>1或x0 或x
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![函数y=lg [(x²+2x)/(x²+2x+3)]的定义域是?同时大于0时:x²+2x＞0 x²+2x+3＞0 解得(x>1或x0 或x](/uploads/image/z/1001748-12-8.jpg?t=%E5%87%BD%E6%95%B0y%3Dlg+%5B%28x%26%23178%3B%2B2x%29%2F%28x%26%23178%3B%2B2x%2B3%29%5D%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E6%98%AF%3F%E5%90%8C%E6%97%B6%E5%A4%A7%E4%BA%8E0%E6%97%B6%3Ax%26%23178%3B%2B2x%EF%BC%9E0+x%26%23178%3B%2B2x%2B3%EF%BC%9E0+%E8%A7%A3%E5%BE%97%28x%3E1%E6%88%96x0+%E6%88%96x)
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函数y=lg [(x²+2x)/(x²+2x+3)]的定义域是?同时大于0时:x²+2x＞0 x²+2x+3＞0 解得(x>1或x0 或x
函数y=lg [(x²+2x)/(x²+2x+3)]的定义域是?
同时大于0时:
x²+2x＞0 x²+2x+3＞0 解得(x>1或x0 或x
函数y=lg [(x²+2x)/(x²+2x+3)]的定义域是?同时大于0时:x²+2x＞0 x²+2x+3＞0 解得(x>1或x0 或x
你解错了
x^2+2x+3>0的解是x-1.
x^2+2x+3