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Imaginary part of −i(3i + 2) is
a)−2
b)2
c)3
d)−3
Correct answer is option 'A'. Can you explain this answer?
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Imaginary part of −i(3i + 2) isa)−2b)2c)3d)−3Correct answer is option ...
(-i)(3i) +2(-i) =-3(i^2)-2i =-3(-1)-2i =3-2i since i=√-1 =3+(-2)i comparing with a+bi,we get b=(-2)
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Imaginary part of −i(3i + 2) isa)−2b)2c)3d)−3Correct answer is option ...
A complex number is the part of the number that involves the imaginary unit "i". It is the coefficient of "i" in the expression for the complex number. For example, in the complex number 3 + 4i, the imaginary part is 4. In the complex number -2i, the imaginary part is -2. The imaginary part is often denoted by the symbol "Im".
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Imaginary part of −i(3i + 2) isa)−2b)2c)3d)−3Correct answer is option ...
(-i)(3i) +2(-i) =-3(i^2)-2i =-3(-1)-2i =3-2i since i=√-1 =3+(-2)i ..... comparing with a+bi,we get b=(-2) therefore imaginary part is (-2)
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Imaginary part of −i(3i + 2) isa)−2b)2c)3d)−3Correct answer is option 'A'. Can you explain this answer?
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