In order for the function #f(x)=k(x-1)+x(k+3)+2# to be a constant function, what should be the value of #k# ?
2 Answers
Jul 9, 2016
Explanation:
A constant function of x will have same value for any real value of x.
So f(0)=f(1)
We have
for x=0,
for x=1
Now
Alternative
Differentiating f(x) w.r.t x
f(x) being constat funtion f'(x)=0
Jul 9, 2016
k=0