如果<img align="absmiddle" alt="" src="/lqwvjeImg/d8/d8364917d3610b079be11db16c971a59.png">，<img align="absmiddle" alt="" src="/lqwvjeImg/a0/a011c621fa09921c1239c774447aeebe.png">都在<img align="absmiddle" alt="" src="/lqwvjeImg/04/0406da8926902b91bb861d5d7a52fe03.png">平面上连续，那么方程<img align="absmiddle" alt="" src="/lqwvjeImg/88/8812737425775d14086e1ae1ba4a4ff7.png">的任一解的存在区间（）．(单选题)<br>.必为<img align="absmiddle" alt="" src="/lqwvjeImg/c1/c1b0f540d587e21b2597d82fe5a261cb.png"><br>.必为<img align="absmiddle" alt="" src="/lqwvjeImg/f2/f23bf7e8fbc5abd0e8164b154f522858.png"><br>.必为<img align="absmiddle" alt="" src="/lqwvjeImg/d9/d9fc6dfe350b6bd68511e41c4be4748a.png"><br>.将因解而定