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CBSE Class 11 » CBSE Class 11 Study Materials » Mathematics » Imaginary numbers chart
CBSE

Imaginary numbers chart

Hero of Alexandria, a Greek mathematician, was the first to invent imaginary numbers.

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When you square an imaginary number, you get a negative result. The square root of a negative number is an imaginary number, which has no monetary value. While it isn’t a true number in the sense that it can’t be measured, Imaginary numbers are real in the context that they exist and are utilised in mathematics on the number line.

Imaginary numbers, also known as complex numbers, are used in real-world applications like electricity and quadratic equations. Imaginary numbers appear in quadratic plane equations that do not touch the x axis. In advanced calculus, imaginary numbers are especially useful.

Complex numbers

Many scientific fields use complex numbers, including signal processing, electromagnetism, and fluid dynamics, quantum mechanics, and vibration analysis. Here we can learn about the definition, terminology, visualization, properties, and operations of complex numbers.

A complex number is considered as the product of a real and imaginary number. the formula a + ib and is usually represented by the symbol z. Both a & b are real numbers in this case. The value ‘a’ is known as the real part, which is denoted by Re (z), and the value ‘b’ is known as the imaginary part Im (z). ib is also known as an imaginary number.                                        

Imaginary Numbers

When imaginary numbers are squared, they produce a negative number. They’re also known as the square root of a negative number. An imaginary number is formed by the product of a non-zero real number and imaginary unit I (also known as “iota”), where I = √(-1) (or) i2 = -1. These are a type of complex number, which is the sum of a real number and an imaginary number. In other words, a complex number is of the form a + ib, where ‘a’ and ‘b’ are both real numbers and bi is an imaginary number.

Imaginary number rules 

  • An imaginary number is defined as a real number multiplied by the imaginary unit I which has the property i2 = 1. 

  • Bi2 is the square of an imaginary number. 5i, for example, is an imaginary number whose square is 25. Zero is considered both real and imaginary by definition.

Imaginary numbers trigonometric notation calculator

This calculator converts imaginary numbers from one representation form to another, providing a step-by-step solution. For example, you can convert a complex number from algebraic to trigonometric representation form or from exponential to algebraic representation form, and so on. To use the calculator, select a complex number representation form and enter data into the calculator. Not only numbers and fractions are accepted as inputs, but also symbols (parameters). The following section provides some theoretical background on the various representation forms of complex numbers.

r=x2+y2

=xx2+y2

=yx2+y2

is known as the trigonometric form of an imaginary number.

Imaginary numbers chart

There is another exciting property of i. It cycles through four different values when multiplied. For instance, I x I = -1. If:

i1=i

i2=-1

i3=-i

i4=1

This cycle will continue with the exponents chart, also known as the imaginary numbers chart. Understanding the exponential properties of imaginary numbers is useful when multiplying and dividing imaginary numbers. After grouping the coefficients and imaginary terms, the exponentiation rules can be applied to I while the real numbers are multiplied as usual. The same is true for division. Using the same multiplication and division rules as you would with variables and coefficients, imaginary numbers can be simplified.

Conclusion

An imaginary number is one which generates a negative result when squared. An imaginary number is the square root of a negative number and has no monetary value. While not a real number in the sense that it cannot be quantified on In terms of the number line, imaginary numbers are real in the context that they exist and are applicable in mathematics.

Imaginary numbers can also be used in signal processing, which is useful in cellular and wireless technology, as well as radar and biology (brain waves). 

faq

Frequently Asked Questions

Get answers to the most common queries related to the CBSE Class 11 Examination Preparation.

What is an example of a complex number?

Ans. A complex number is the sum of two real numbers and one imaginary number. In standard form, a complex nu...Read full

What is the numerical value of 3i?

Ans. As I is a three-order identity matrix, the value of | 3i| will be three.

Define imaginary numbers?

Ans.  An imaginary number is one that produces a negative result when squared. An imaginary number is the sq...Read full

How do you put up with imaginary numbers?

Ans.  The square root of minus one (1) is the “unit” Imaginary Number, which is one in Real Numb...Read full

Ans. A complex number is the sum of two real numbers and one imaginary number. In standard form, a complex number is written as a + bi, where is the real part and bi is the imaginary part. 5+2i , for example, is a complex number. 3+4i3  is also a number.

Ans. As I is a three-order identity matrix, the value of | 3i| will be three.

Ans.  An imaginary number is one that produces a negative result when squared. An imaginary number is the square root of a negative number that does not have a tangible value.

Ans.  The square root of minus one (1) is the “unit” Imaginary Number, which is one in Real Numbers. In mathematics, the symbol for (1) is I which stands for imaginary.

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