5 pencils and 7 pens together cost Rs 50 whereas 7 pencils and 5 pens together cost Rs 46. Find the cost of one pencil and that of one pen
Duscess the continuity of the function f(x)=(1-5x) to the power 1/x is equal to e to the power 5 atx=0 for x not equal to 0 or x=0