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Speak With a Friendly Mentor. ###### Deepak Patra posted an Question
November 19, 2021 • 11:57 am 30 points
• IIT JAM
• Mathematics (MA)

# 13. let lx)= sin x-x+ 3 and g(x)= cos x-1+ for xer. which of the following stateiments are correct? (a.) s(a)2 0 for all x>0 (b.) g is an increasing function on

13. Let lx)= sin x-x+ 3 and g(x)= cos x-1+ for xeR. Which of the following stateiments are correct? (a.) S(a)2 0 for all x>0 (b.) g is an increasing function on 10, o) (c.) g is an decreasing function on 0, o d.) is a decreasing function on |0, o)

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• ##### Anonymous User

b check attachment

sir putting x= 0.2 i get f(x) is negative ... how can the option a statement is true ????

yes sir it giving negative result???

f(x) < 0 then f(x)= has one root others then zero

sir here option a says that for all x € [0, infinity] ,f(x) >= 0 .. but .. putting x= 1 we get f is negative .. so i think option a is wrong .. only option b is correct....

sorry x = 0.2

plz wait I check

okk

you are right

so a wronge

thank you sir

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