Math Chapter Wise question with answer

Q01 If r r r Z cos isin, 2 2 then Z1.Z2.Z3....∞ ∞ ∞ is equal to: English · UP PCS (Pre) 2003 Q02 The value of 2 2 cosh z sinh z − −: English · TGT 2013 Q03 The Real part of sin (x+iy) is: English · TGT 2010 Q04 Let f (r cos θ+ irsin θ) = u (r, θ) + iv (r, θ). For f to be differentiable at (r, θ), Cauchy-Riemann equation stat... English · JSSC PGT 2018 Q05 If (1 + i tanα)1+itanβ has real values only, then one of them is given by: English · UP PCS (Pre) 1996 Q06 The function f (z) = |z|2 is English · Bihar (TRE 1.0) -2023