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Grade 11Differential Calculus

Q)The value of the parameter a,for which the function f(x)=1+ax,a is not equal to zero is the inverse of itself,is
a)-2 b)-1 c)1 d)2
PLZ solve it sir

Sibashis ghosh

11 Years agoGrade 11

1 Answer

Vikas TU

9 Years ago

Inverse of f(x) is:

y = ax + 1

ax = y – 1

x = (y-1)/a

or

y(x) = (x-1)/a

then,

(x-1)/a = (1+ax)

solve the quadratic and fin the dicriminant and its range.

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