From 35caf643904e4bd8f329d305f8588fc4e6b6e769 Mon Sep 17 00:00:00 2001
From: Soup <39444003+magicalsoup@users.noreply.github.com>
Date: Sat, 26 Jan 2019 12:55:23 -0500
Subject: [PATCH] Update Math.md
---
Grade 9/Math.md | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Grade 9/Math.md b/Grade 9/Math.md
index f42ab0e..201e18a 100644
--- a/Grade 9/Math.md
+++ b/Grade 9/Math.md
@@ -355,7 +355,7 @@
>> |3D Object|Maximum Volumne|Minimum Surface Area|
>> |:--------|:--------------|:-------------------|
->> |Cylinder(closed-top)|The cylinder must be similar to a cube where h = 2r
V = πr2h
Vmax = πr2(2r)
Vmax = 2πr2|The cylinder must be similar to a cube where h = 2r
SA = 2πr2+2πrh
SAmin = 2πr2+2πr(2r)
SAmin = 2πr2+4πr2
SAmin = 6πr2|
+>> |Cylinder(closed-top)|The cylinder must be similar to a cube where h = 2r
V = πr2h
Vmax = πr2(2r)
Vmax = 2πr3|The cylinder must be similar to a cube where h = 2r
SA = 2πr2+2πrh
SAmin = 2πr2+2πr(2r)
SAmin = 2πr2+4πr2
SAmin = 6πr2|
>> |Rectangular Prism(closed-top)|The prism must be a cube,
where l = w = h
V = lwh
Vmax = (w)(w)(w)
Vmax = w3|The prism must be a cube,
where l = w = h
SA = 2lh+2lw+2wh
SAmin = 2w2+2w2+2w2
SAmin = 6w2|
>> |Cylinder(open-top)|h = r
V = πr2h
Vmax = πr2(r)
Vmax = πr3|h = r
SA = πr2+2πrh
SAmin = πr2+2πr(r)
SAmin = πr2+2πr2
SAmin = 3πr2|
>> |Square-Based Rectangular Prism(open-top)|h = w/2
V = lwh
Vmax = (w)(w)(w⁄2)
Vmax = w3⁄2|h = w/2
SA = w2+4wh
SAmin = w2+4w(w⁄2)
SAmin = w2+2w2
SAmin = 3w2|
@@ -510,7 +510,7 @@
> ## Discriminant
>> The discriminant determines the number of solutions (roots) there are in a quadratic equation. ```a```, ```b```, ```c``` are the
->> coefficients and constant of a quadratic equation: ```y = ax2 + bx + c```
+>> coefficients and constant of a quadratic equation: **y = ax2 + bx + c**
>> D = b2 - 4ac
>> D > 0 ```(2 distinct real solutions)```
>> D = 0 ```(1 real solution)```