Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If y=cos(mx), then the determinant `Delta =|[y,y_1,y_2],[y_3,y_4,y_5],[y_6,y_7,y_8]|` where `y_r=(d^ry)/(dx^r)`, equals - Sarthaks eConnect

If y=cos(mx), then the determinant `Delta =|[y,y_1,y_2],[y_3,y_4,y_5],[y_6,y_7,y_8]|` where `y_r=(d^ry)/(dx^r)`, equals

`m^7`

`m^12`

`m^9`

none of these