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\[f(t)\sqrt{t^2+1}\]
Find each function value if it exists

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saifoo.khan

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HEWWEO!

mathtard

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HI!!!!!

id21

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If it is
f(t)=sqrt(t^2+1)
Then you can say that t^2+1 must be positive or 0, so it can't be negative:
t^2+1<0
t^2<-1
but t^2 always positive, so you can say that t can be all real number.

saifoo.khan

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Hey im back!

mathtard

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heyyyy

mathtard

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so can you help me?

saifoo.khan

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brb in 10mins.. eating dinner soory!

mathtard

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