Let `f:[2,oo) rarr R` and `g:[-2,oo) rarr R` be to two real functions defined `f(x)=sqrt(x-2)a n dg(x)=sqrt(x+2.)` Find `f+ga n df-gdot`
Let `f:[2,oo) rarr R` and `g:[-2,oo) rarr R` be to two real functions defined `f(x)=sqrt(x-2)a n dg(x)=sqrt(x+2.)` Find `f+ga n df-gdot`
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Correct Answer - (i) `sqrt(x-2)+sqrt(x+2)" for all "x""in[2,oo)` (ii) `sqrt(x-2)-sqrt(x+2)" for all "x""in[2,oo)`
(iii) `sqrt(x^(2)-4)" for all "x""in[2,oo)`.
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