Now look at y'2 x0, that is y1, that y1 is actually 1. So, the derivative is non-zero for certain function, that means the function cannot be 0 function.
ಈಗ ವನ್ನು ನೋಡಿದರೆ ಅದು ಆಗಿದೆ. ಈ ವಾಸ್ತವವಾಗಿ 1 ಆಗಿದೆ.