下列说法中正确的是<br>·若<img src="/lqwvjeImg/0c/0c4295cbb79c1093182fb436873f0486.png" >在点<img src="/lqwvjeImg/3a/3a238690a0b7cf5ff24ec97d13cc7b9f.png" >处连续，则在该点处的导数<img src="/lqwvjeImg/bd/bd781745a6d8395ddf7bfcb86c5a7d29.png" >一定存在。<br>·函数<img src="/lqwvjeImg/48/482318b8418d76f582599d238e6100ff.png" >的极大值不一定大于极小值。<br>·如果点<img src="/lqwvjeImg/3a/3a238690a0b7cf5ff24ec97d13cc7b9f.png" >是函数<img src="/lqwvjeImg/48/482318b8418d76f582599d238e6100ff.png" >的极值点，且<img src="/lqwvjeImg/bd/bd781745a6d8395ddf7bfcb86c5a7d29.png" >存在，则必有<img src="/lqwvjeImg/53/53cc901a19e20197512ca0706e65eb0b.png" ><br>·若<img src="/lqwvjeImg/48/482318b8418d76f582599d238e6100ff.png" >有原函数，则它的原函数一定有无穷多个。<br>·若<img src="/lqwvjeImg/21/211115e79f8f031e92b0bcf7ded653d2.png" ><img src="/lqwvjeImg/d5/d536f8d241e1783844f534722ff3d242.png" >都是<img src="/lqwvjeImg/48/482318b8418d76f582599d238e6100ff.png" >的原函数，则<img src="/lqwvjeImg/68/68d2b5e39ac509ec483deeec156bfe6b.png" >其中C为常数。