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Grade: 12

Answers : (3)

Sher Mohammad
IIT Delhi
askIITians Faculty
174 Points
							One solution of this equation is x=0
for x=1, 2+3+4>5
for x=2, 4+9+15>25
for x=3,8+27+64<625
imply there is one more solution between 2 and 3, hence total solution of this equation is 2.


sher mohammad
b.tech, iit delhi
faculty askiitians
4 years ago
Sher Mohammad
IIT Delhi
askIITians Faculty
174 Points
							
sorry, x=0 is not a answer
4 years ago
Athitya Kumar
39 Points
							
» Answer is given as one root.
 
» My doubt : Yes , there should be atleast a root between 2 and 3. I got that. But how do we confirm there is just one root and not any odd number of roots between 2 and 3?
In simple words , functional values at x=2 and x=3 are opposite , ie, any odd number of roots can be there right? Why only one root and not 3 or 5 roots???
4 years ago
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