manasveek
hey
EgmatQuantExpert,
You have given great explanation and practice problems.
but I am getting totally confused with starting points of drawing curve.
for above problem, I drew curve starting from top left.
and considered positive parts. where answer is different.
this must be something obvious. but pls help me to get there.
thanks in advance!
Hey
manasveek,
you need to start drawing the curve from the top right portion.
I am quoting a part of the article that explains the method:
Quote:
How to draw the wavy line?
1. How to start: Once you draw the number line and mark the zero points on the number line, it’s time to draw the wavy line. Start from the top right most portion. Be ready to alternate (or not alternate) the region of the wave based on how many times a point is root to the given expression.
2. How to alternate:
if the power of a term is odd, then the wave simply passes through the corresponding point (root) into the other region (to –ve region if the wave is currently in the positive region and to the +ve region if the wave is currently in the negative region).
I will suggest you go through the whole article:
Wavy Line Method Application - Complex Algebraic InequalitiesAlso, read our new article about solving inequalities:
Solving inequalities- Number Line Method