Thank you for this. My failure at calculus in my undergrad really set the tone for my mech eng. degree. I felt exactly what you mentioned: that you needed to me

Thank you for this. My failure at calculus in my undergrad really set the tone for my mech eng. degree. I felt exactly what you mentioned: that you needed to memorize the "trick" and then you could solve the equation. I am still embarrassed at my poor performance in undergrad.