GATE CE 2005 | GATE CE Year Wise Previous Years Questions

GATE CE 2005

MCQ (Single Correct Answer)

-0.3

Which one of the following is not true for the complex number z₁ and z₂ ?

$${{{z_1}} \over {{z_2}}} = {{{z_1}\overline {{z_2}} } \over {{{\left| {{z_2}} \right|}^2}}}$$

$$\left| {{z_1}\, + \,\,{z_2}} \right| \le \,\left| {{z_1}} \right|\, + \,\left| {{z_2}} \right|$$

$$\left| {{z_1}\, + \,\,{z_2}} \right| \le \,\left| {\left| {{z_1}} \right|\, - \,\left| {{z_2}} \right|} \right|$$

$${\left| {{z_1}\, + \,\,{z_2}} \right|^2}\, + \,{\left| {{z_1}\, - \,\,{z_2}} \right|^2} = \,\,2{\left| {{z_1}} \right|^2}\, + \,2{\left| {{z_2}} \right|^2}$$

GATE CE 2005

MCQ (Single Correct Answer)

-0.6

Consider likely applicability of Cauchy's Integral theorem to evaluate the following integral counterclockwise around the unit circle C.

$$I\, = \,\oint\limits_C {\sec z\,dz} $$, z being a complex variable. The value of I will be

I = 0 ; Singularities set = $$\phi $$

I = 0 ; Singularities set = $$\left\{ { \pm {{\left( {2n + 1} \right)} \over 2}\pi \,\,;\,n = 0,1,2,.....} \right\}$$

I = 0 ; Singularities set = $$\left\{ { \pm \,n\pi \,\,;\,n = 0,1,2,.....} \right\}$$

None of the above

GATE CE 2005

MCQ (Single Correct Answer)

-0.3

Given $$a>0,$$ we wish to calculate it reciprocal value $${1 \over a}$$ by using Newton - Raphson method for $$f(x)=0.$$ The Newton - Raphson algorithm for the function will be

$${X_{k + 1}} = {1 \over 2}\left( {{X_k} + {a \over {{X_k}}}} \right)$$

$${X_{k + 1}} = {X_k} + {a \over 2}X_k^2$$

$${X_{k + 1}} = 2{X_k} - aX_k^2$$

$${X_{k + 1}} = 2{X_k} - {a \over 2}X_k^2$$

GATE CE 2005

MCQ (Single Correct Answer)

-0.6

Given $$a>0,$$ we wish to calculate its reciprocal value $${1 \over a}$$ by using Newton - Raphson method for $$f(x)=0.$$ For $$a=7$$ and starting with $${x_0} = 0.2\,\,$$ the first two iterations will be

$$0.11,$$ $$0.1299$$

$$0.12,$$ $$0.1392$$

$$0.12,$$ $$0.1416$$

$$0.13,$$ $$0.1428$$

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