If fx 0 we say x is a zero of the function f Find the numbe

If f(x) = 0 we say x is a zero of the function f. Find the number of zeros which each of the functions below has on the interval 0

Solution

a) y =2sin +1

4 zeroes

y=2sin+3

no zeroes

y=-3sin +3

2 zeroes

b) f()=Asin() +k has exactlY 2 zeroes when |A|=|K|

C) f()=Asin() +k has NO zeroes when |A|<|K|