Topic Details (Notes format)

How to Use Matrices for Solving Linear Systems

Subject: Mathematics

Book: Maths Mastery

Matrices transform sets of linear equations into a compact form AX = B, where A holds coefficients, X is the variable matrix, and B is the constants matrix. Techniques like Gaussian elimination or inverse matrices help solve for X. For example, if A is a 2×2 matrix and B is a 2×1 matrix, finding X often involves computing A⁻¹B. Matrices are crucial in computer graphics (transformations), engineering (stress-strain systems), and advanced math modeling. Proficiency ensures you can handle large or complex linear systems systematically, bridging theoretical knowledge with powerful computational methods.

Practice Questions

The area of an equilateral triangle with side length 6 cm is:

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If 2x = 16, what is the value of x?

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The sum of the squares of two consecutive integers is 145. What are the integers?

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If sin(A) = 3/5 and cos(B) = 5/13, where A and B are acute angles, what is sin(A+B)?

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If a = 5 and b = 12, what is the length of the hypotenuse of a right triangle?

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The sides of a triangle are 5 cm, 12 cm, and 13 cm. What type of triangle is it?

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A man spends 75% of his income and saves Rs. 600. What is his total income?

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What is the area of a sector of a circle with radius 14 cm and central angle 90°?

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What is the sum of the first 10 positive even numbers?

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The base of a triangle is 10 cm and its height is 6 cm. What is its area?

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