Courtesy Ram.

Maths Strategy by Ram already mentioned nuances of Maths Optional. Here are his notes.

BOOK LIST

Maths Paper I

Linear Algebra

• Schaum’s outline on Linear Algebra
• IMS Notes on Linear Algebra

Calculus

• Mathematical Analysis by Malik and Arora
• Differential Calculus (Krishna Series)
• Integral Calculus (Krishna Series)

Analytic Geometry

• Analytic Geometry (3D) (Krishna Series)
• Golden Solid Geometry

Ordinary Differential Equations

• Ordinary and Partial Differential Equations by MD Raisinghania
• Advanced Differential Equations by MD Raisinghania

Vector Calculus

• Vector Calculus (Krishna Series)
• Schaum’s outline on Vector Analysis

Statics and Dynamics

• Statics (Krishna Series) Dynamics (Krishna Series)

Maths Paper II

Modern Algebra

• Group Theory by R Kumar (Vardhaman Publications)
• Ring Theory by R Kumar (Vardhaman Publications)

Real Analysis

• Mathematical Analysis by Malik and Arora

Complex Analysis

• Schaum’s Outlines Complex Variables

Linear Programming Problems (LPPs)

• Operations Research (Krishna Series)

Partial Differential Equations

• Ordinary and Partial Differential Equations by MD Raisinghania
• Advanced Differential Equations by MD Raisinghania

Numerical Analysis and Computer Programming

• Numerical Methods by Jain and Iyengar
• Grewal, Engineering Mathematics

Mechanics

• Rigid Dynamics (Vol I) (Krishna Series)

Fluid Dynamics

• Fluid Dynamics, MD Raisinghania

Formula Sheets:

• Formula Sheet Maths Paper I
• Formula Sheet Maths Paper I

Notes:

• Linear Algebra
• Calculus
• Analytic_Geometry
• Ordinary Differential Equations
• Vector Analysis
• Statics
• Dynamics
• Modern_Algebra
• Real Analysis
• Complex Analysis
• Linear Programming Problems

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All My Notes

Sample PDFs of Decode Ethics 4.0 Part-A & Part-B Books, Decode GS-2 Book & Decode History Book:

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• Partial_Differential_Equations
• Numerical Analysis and Computer Programming
• Mechanics
• Fluid Dynamics
• IFoS Specific Maths

ATB!!!