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Se considera functia f:[0, +∞) →R, f(x) = √x. Sa se calculeze:
f(1) + 9 f(1/9) - 10 f(1/25)


Răspuns :

√(1)+9*√(1/9)-10*√(1/25)
=1+9*1/3-10*1/5
=1+3-2
=2