Let z=x+iy be a complex number such that coshz#0. Then Re(tanhz) is equal to * sinhxcoshx sinh²x+cos?y O the above O None of these sinxcosx sinhycoshy sinh?x+cos?y sinh?x+cos?y O the above: O the above: sinycosy sinh2x+cos²y
Let z=x+iy be a complex number such that coshz#0. Then Re(tanhz) is equal to * sinhxcoshx sinh²x+cos?y O the above O None of these sinxcosx sinhycoshy sinh?x+cos?y sinh?x+cos?y O the above: O the above: sinycosy sinh2x+cos²y
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter7: Real And Complex Numbers
Section7.3: De Moivre’s Theorem And Roots Of Complex Numbers
Problem 26E
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