math>philosophy
Prove that the range of \[1 + \sin ^{2} x\] is between 1 and 2, inclusive.
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AravindG
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sin x maximum vallue is 1
AravindG
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so max value of exp will be 2
AravindG
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now minimum value when x=0 sin x=0
AravindG
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so minimum value =1
AravindG
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so 1+x^2 has values [1,2]
AravindG
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gt tht?
AravindG
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becaus sin x max value is 1
akash_809
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sinx , minimum value =-1, sin^2x , minimum value =0 ( sin^2x) cant be negative and maximum value of sin^2x=1....put sin^2x=1 for maximum value and put sin^2x=0 for minimum value
akash_809
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yes maximum value is 2
AravindG
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so to maximise sin^x+1 ,,,,sin x maximum should be there
AravindG
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ie 1+1=2