1.

Value of 'c' of Lagrange's mean theorem for f(x) = {:{ (2+x^(3) ,","if xlt 1),(3x,","if x gt 1 ):} on [-1,2]

Answer»

`+- ( SQRT(5))/( 3)`
`+- ( sqrt(3))/( 2)`
`+- (sqrt(2))/( 5)`
`+- ( 3)/( sqrt(5))`

ANSWER :A


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