mathematics

Parin Sir > mathematics

May

■Arithmetical Progression (A.P.) : If each term of a progression differs from its preceding term by a constant, then such a progression is called an arithmetical progression. This constant difference is known as common differen…

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May

Surd

Surds : We know that $\sqrt{2}$ , $\sqrt{3}$ ,

Posted in: Surd,

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May

Surds & Indices

Indices : we know that 2 $\times$ 2 = 2², 2 $\times$ 2

Posted in: Surds & Indices,

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May

Examples

(1) Evaluate : (i) $\sqrt{45}\times\sqrt{20}$ (ii) .

Posted in: Examples,

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29

May

Cube Root
Cube Root : The cube root of a given number x is the number whose cube is x. We denote the cube root of x by $\sqrt[3]{x}$

Posted in: Cube Root,

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29

May

Square Root
Square Root : The square root of a given number is that number whose square is equal to the given number.

If x² = y, we say that square root of ‘y’ is ‘x’ and we write,

Posted in: Square Root,

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May

Square, Square Roots & Cube Roots

☼ Square of a number : If a number is multiplied by itself the product so obtained is called the square of that number.

e.g. Square of 9 = 9 $\times$

Posted in: Square Roots & Cube Roots,

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May

Examples

(1) 0.000008569 when expressed in scientific notation, is :

Soln. 0.000008569 = 8.569 $\times$ $10^... </p> <div class=$

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May

H.C.F. & L.C.M. of Decimal Fractions

■ Rule : In the given decimal numerals, make same number of decimal places by annexing zeros if needed. Considering these numbers without decimal places, find H.C.F. or L.C.M. as the case may be. Now, in the re…

Posted in: H.C.F. & L.C.M. of Decimal Fractions,

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May

Dividing a Decimal Fraction by a Decimal Fraction

■ Rule : Multiply both the dividend and the divisor by a suitable power of 10 to make the divisor a whole number. Now, proceed as above.

e.g. (i) Evaluate : (a) 42

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