2 functions labeled f&g (dashed line). Solve for x: f(x)=g(x)

Mathematics
Tutor: None Selected Time limit: 1 Day

May 29th, 2015

Solving f(x)=g(x) using the graphic representations of these functions is to see for which x, f and g intersect

f(x)=g(x) <=> x=-2 or x=-1 or x=0 or x=1 or x=2 or x=3 

However these functions are may not only exist for x between -3 and 3 as ploted. We could "see" that f and g will intersect also for x=4,-4,5,-5 sor for all values of x that equals an integer. 


May 29th, 2015
thank you! is there a way to express that? f(x)=3sec(pi)x and g(x)=3cos(pi)x. Is there a way to express g(x)=f(x) algebraically? 

May 29th, 2015

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