#y=-5^x#, find domain and range?

1 Answer
1s2s2p
May 2, 2018

#x inRR,f(x)<0#

Explanation:

We know that #y=a^x# can take any value for #x#, so the domain is #x inRR#.

However, #y=-5^x# is unable to reach zero, as #xto-oo# #y->0#, and since it is #-f(x)# all values will be negative. Range: #f(x)<0#

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