Home › CBSE Class 11 (Commerce) › Mathematics › Complex Numbers and Quadratic Equations › For z = 2 + i5, what are the real part and the i…
For z = 2 + i5, what are the real part and the imaginary part?
ARe 5, Im i2
BRe 5, Im 2
CRe 2, Im i5
DRe 2, Im 5
Answer & Solution
Correct answer: D. Re 2, Im 5
In a + ib the real part is a and the imaginary part is the real number b, so Re z is 2 and Im z is 5.
Related questions
If x is real and |x + 3i| = 5, which values can x take?Which property explains why (2 + 3i)(1 − i) equals (1 − i)(2 + 3i)?Because complex numbers obey the usual associative, commutative and distributive laws, whaWhat is the real part of the reciprocal of a + ib (not both zero)?If z = −z̄ for a complex number z, which statement is correct?If a complex number z equals its own conjugate, what kind of number is z?For z = a + ib, the sum z + z̄ equals what?Taking the conjugate of the conjugate of z gives which result?