Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) If tangent at point (1, 2) on curve `y=ax^2 +bx+7/2` be parallel to normal at (-2, 2) on the curve `y=x^2+6x+10`, then - Sarthaks eConnect

If tangent at point (1, 2) on curve `y=ax^2 +bx+7/2` be parallel to normal at (-2, 2) on the curve `y=x^2+6x+10`, then

a=1

a=-1

`b=-15/2`

`b=5/2`