diff --git a/FSF-2020/calculus-of-several-variables/approximations-and-optimizations/README.md b/FSF-2020/calculus-of-several-variables/approximations-and-optimizations/README.md
index f56f4e8..1c7f5dc 100644
--- a/FSF-2020/calculus-of-several-variables/approximations-and-optimizations/README.md
+++ b/FSF-2020/calculus-of-several-variables/approximations-and-optimizations/README.md
@@ -2,8 +2,8 @@
 Github: https://github.com/vnb09
 <br/></br>
 ## Sub-Topics Covered:
-+ Critical Points
-+ The Second Derivative Test
-+ Tangent Plane Approximations
-+ Total Differential
-+ Lagrange Multipliers
++ [Critical Points](https://math.animations.fossee.in/contents/calculus-of-several-variables/approximations-and-optimization/critical-points) 
++ [The Second Derivative Test](https://math.animations.fossee.in/contents/calculus-of-several-variables/approximations-and-optimization/the-second-derivative-test)
++ [Tangent Plane Approximations](https://math.animations.fossee.in/contents/calculus-of-several-variables/approximations-and-optimization/tangent-plane-approximations)
++ [Total Differential](https://math.animations.fossee.in/contents/calculus-of-several-variables/approximations-and-optimization/total-differential)
++ [Lagrange Multipliers](https://math.animations.fossee.in/contents/calculus-of-several-variables/approximations-and-optimization/lagrange-multipliers)