Questions
The number of real solutions of is
a
0
b
1
c
2
d
infinite
detailed solution
Correct option is C
tan−1x(x+1)+sin−1x2+x+1=π2⇒cos−111+x2+x2+sin−1x2+x+1=π2⇒cos−111+x2+x2=π2−sin−1x2+x+1=cos−1x2+x+1⇒11+x2+x2=x2+x+1⇒x2+x+1x2+x2+1=1⇒x2+x3+x2+x2+x2+x=0⇒x2+x=0⇒x=−1,0Talk to our academic expert!
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If then equals
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