The 4th term in the sequence is -37
Recursive function
Given the following recursive function and first term as show below
a1 = -2
an = 2an-1 - 3
For the second term
a2. = 2a1 - 3
a2 = 2(-2) - 3
a2 = -7
For the third term
a3 = 2a2 - 3
a3 = 2(-7) - 3
a3 = -17
a4 = 2a3 - 3
a4 = 2(-17) - 3
a4 = -37
Hence the 4th term in the sequence is -37
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