Category: Mathematics

1+cos2α =

Post author By esimpk
Post date June 16, 2021

2sinα
2cosα
2secα
2cos²α

1+2+3+…+n =

Post author By esimpk
Post date June 16, 2021

n(n + 1)/6
n(n + 1)/4
n(n + 1)/2
n(n + 1)

1′ =

Post author By esimpk
Post date June 16, 2021

60°
60″
3600″
3600°

1/4 rotation(anti-clockwise) =

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Post date June 16, 2021

45°
90°
180°
360°

1/2,1/7,1/12,… is

Post author By esimpk
Post date June 16, 2021

an arithmetic progression
a Geometric Progression (GP)
a harmonic progression
a harmonic series

1/12.11.10 =

Post author By esimpk
Post date June 16, 2021

1/12ι
9ι/12ι
12ι/9ι
12ι

1/(x-3)(x-2) =

Post author By esimpk
Post date June 16, 2021

1/x² – 1/(x-2)
1/(x-3) – 1/(x-2)
1/x³ – 1/(x-2)
1/(x+3) – 1/(x+2)

1/(x² + 5)(x²+4) =

Post author By esimpk
Post date June 16, 2021

1/(x² – 4) – 1/(x²+5)
1/(x² +4) – 1/(x²+5)
1/(x² – 4) – 1/(x²-5)
None of Above

1/(x+3)(x+2) =

Post author By esimpk
Post date June 16, 2021

1/x³ – 1/(x+2)
1/(x-3) – 1/(x-2)
1/(x+3) – 1/(x+2)
None of Above

1/(n+2)(n+1)n =

Post author By esimpk
Post date June 16, 2021

nι
(n+2)ι/(n-1)ι
(n+2)ι
(n-1)ι/(n+2)ι