added questions for lec8

SRA-VJTI · Jan 8, 2022 · f3087fd · f3087fd
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diff --git a/Selected Questions/Images/lec8_a1.png b/Selected Questions/Images/lec8_a1.png
diff --git a/Selected Questions/Images/lec8_a2.png b/Selected Questions/Images/lec8_a2.png
diff --git a/Selected Questions/Images/lec8_q2.png b/Selected Questions/Images/lec8_q2.png
diff --git a/Selected Questions/lec8.md b/Selected Questions/lec8.md
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+# Lec 8- Solving Ax = b: Row Reduced Form R
+
+1.Find the value of c that makes it possible to solve Ax = b, and solve it: <br>
+        u + v + 2w = 2 <br>
+       2u + 3v - w = 5 <br>
+       3u + 4v + w = c: <br>
+
+ <details>
+<summary>
+Answer
+</summary>
+c == 7 allows u = 1, v == 1, w == O. The column space is a plane.
+</details>
+
+2.What conditions on b1, b2, b3, b4 make each system solvable? Solve for x:
+
+![Question2](Images/lec8_q2.png)
+
+<details>
+<summary>
+Answer
+</summary>
+Solvable if b2 = 2b1 and 3b1 - ,3b3 + b4 = O. Then X = 
+<br>
+
+![Question2](Images/lec8_a1.png)
+
+<br>
+(b) Solvable if b2 == 2b1 and 3b1 - 3b3 + b4 == O. Then x =
+<br>
+
+![Question2](Images/lec8_a2.png)
+</details>