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Veronika [31]
3 years ago
5

Compose an expression to find the 20th term of any arithmetic sequence in terms of just a and d. Look at the pattern in

Mathematics
1 answer:
pashok25 [27]3 years ago
3 0

Answer:

Hello,

Step-by-step explanation:

u(i) is the ith term of the a.s

a is the first term and d the common difference

for n in {1,2,3...}: u(n)=a+(n-1)*d

u(1)=a+0*d=a

u(2)=u(1)+d=a+d=a+1*d

u(3)=u(2)+d=a+1*d+d=a+2*d

...

u(20)=a+19*d

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