Hello everyone Hassan here. I am the university topper and can help in

1.Multi variable calculus

1. Pre-Calculus
2. Calculus I
3. Calculus II
4. Calculus III

getting into detail

2- Equations and inequalities:

• Solving all type of linear and non linear system of equations

3- Functions:

• Graph of different functions
• all 6 basic graphs 2D & 3D

4- Limits:

• single variable limits
• Multivariable Limits

5- Differentiation:

• single variables
• multivariable differentials
• Partial Differentials
• Vector Differentiations

6- Integration:

• Line integrals
• Area Integrals
• Curve integrals
• Double integrals
• Triple (volume) Integrals
• Vector Calculus Integrals

7- Curve Parameterizations

• U V axis Parametrizations
• Space axis