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Q.

The period of the function sin3⁡x2+cos5⁡x5 is

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a

b

10π

c

d

answer is B.

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Detailed Solution

fx= sin3x2+cos5x5the period of sin3x is 2π  since sin32π+x=sin3x ⇒the period of sin3x2= 2π12 =4π    if fx  period is p then fax+b  period is pa ⇒ so the period of sin3x2  is 2π  the period of cos5x is 2π so the period of cos5x5 is 2π15= 10π so the period of cos5x2 is =5πso the period of fx = LCM of2π,5π =10π
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The period of the function sin3⁡x2+cos5⁡x5 is