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Yogita Ingle 4 years, 3 months ago
Given the size of red blood cells is 0.000007mm.
0.000007mm = 0.000007 × ( 106/106 )
= ( 0.000007 ×106 ) × 1/106
= 7 × 1/10^6
= 7 × 10-6 mm
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Gaurav Seth 4 years, 3 months ago
Give the geometric representations of 2x + 9 = 0 as an equation
(1) in one variable
(2) in two variables
answer :
(1) In one variable, 2x + 9 = 0 represents a point x = -9/2 = -4.5
(2) In two variables, 2x + 9 = 0 represents a straight line passing through point (−4.5, 0) and parallel to y-axis. It is a collection of all points of the plane, having their x-coordinate as 4.5.
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Gaurav Seth 4 years, 3 months ago
Zero Polynomial. The constant polynomial. whose coefficients are all equal to 0. The corresponding polynomial function is the constant function with value 0, also called the zero map. The zero polynomial is the additive identity of the additive group of polynomials.
Examples: xyz + x + y + z is a polynomial of degree three; 2x + y − z + 1 is a polynomial of degree one (a linear polynomial); and 5x2 − 2x2 − 3x2 has no degree since it is a zero polynomial. A polynomial all of whose terms have the same exponent is said to be a homogeneous polynomial, or a form. Forms of the first, second, and third degrees are said to be linear, quadratic, and cubic. Forms in two or three variables are called binary or ternary, for example, x2 + y2 + z2 − xy − yz − xz is a ternary quadratic form.
Posted by Divanjyoti Deka 4 years, 3 months ago
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Yogita Ingle 4 years, 3 months ago
If n is not a perfect square then is irrational
Let on the contrary say it is rational .
Then
where p and q are coprime integers.
so n =p2/q2
p2 =nq2
This shows p divides q
which is a contradiction.
Hence is irrational if n is not a perfect square.
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Nancy Singh 4 years, 2 months ago
2Thank You