Mr. Bidur Bastola

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Solving linear equations by using a matrix or inverse method...

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Important question from vector.

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Solving two variable equations by substitution method...

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Prove that (cos A - cos B)² + (sin A - sin B)² = 4sin² ((A-B)/2)

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Simplify: 2a/(2a+3b) + 3b/(2a-3b) - 18b²/(4a²-9b²)

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Simplify: 1/(x-1)² - 2x/(x³-1)

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Important conditional trigonometric prove...

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In a G.P the second and fifth teams are 6 and 162, respectively. Which term of the sequence is 1458?

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The salary of an officer is noticed as, ' the starting per month is 6000 and increases 400 per...

0:20:00

Important question from geometry...

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Find the H.C.F and L.C.M. of: x²+2xy+y²-16, x²+2x-8-y²-6y and x²+xy+4x.

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Find the H.C.F and L.C.M of: a²+2ab+b²-1, a²+ab+a and 9(a+b)²+a+b-8

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A couple is planning to have three children, then what is the probability that all three are sons?

0:11:45

Solving simultaneous equations by using Cramer's rule...

0:13:08

Fix question for the SEE examination from depreciation...

0:14:25

If A+B+C = π then prove that: cos A/2 + cos B/2 + cos C/2 = 4cos (π-A)/4.cos (π-B)/4.cos(π-C)/4

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Prove that: cos A.cos(120⁰-A).cos(120⁰+A) = 1/4 cos 3A

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Important question from sequence and series...

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Important question from trigonometry...

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Simplify from rational fraction. #simplify #education #maths #algebra #mathematics

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Simplify: 1/8(1-√x) - 1/8(1+√x) + 2√x/8(1-x)

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Important question for SEE from the set.

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If cos A = 1/2(a+1/a) then verify that: cos 2A = 1/2(a^2 + 1/a^2)

0:11:00

Shortcut trick of finding cube root...