ashmit
IiTeachChem
•Created by ashmit on 6/9/2024 in #💭│doubts
how to do three kinematics problems?
30 replies
IiTeachChem
•Created by ashmit on 5/15/2024 in #💭│doubts
when to change the sign of inequation?
I can't recall all the cases in which we have to change the sign of inequations.
The sign of inequation gets changed when we transpose a negative from left to right side, or right to left side, is this correct? Does the sign also gets changed when we multiply both sides by negative to make 'x' postive?
Also, in equations x variable can't be negative, right? So we have to make it positive, but in a case like
x^2-x+1/5-x > 5, for example, we don't have to multiply by negative on both sides, right? My question is, are we only supposed to make 'x^2' positive, and not the 'x' variable?
9 replies