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COMPLEX NUMBERS AND QUADRATIC EQUATIONS — MATHS STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceMATHSCOMPLEX NUMBERS AND QUADRATIC EQUATIONS1 Mark
MCQ
1 + 0 i is, _________________ for complex number z.
  • A
    additive inverse
  • B
    additive identity element
  • ✓
    multiplicative identity element
  • D
    multiplicative inverse
✓

Answer

Correct option: C.
multiplicative identity element
On multiplying one ( 1 + 0 i ) to a complex number, we get same complex number so 1 + 0 i is multiplicative identity element for complex number z i.e. z × 1 = z.

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