I am trying to generate an arithmetic and geometric series/sequence with JavaScript.

i trying generate arithmetic , geometric
series/sequence javascript. thing makes challenging that
i using user input determine different parts of formula using to
generate each sequence. have tried run formulas, found out was
running strings through them , not numbers. how generate my
sequences/series , still use user input? ps, these formulas: (a1 is
first term, d , r difference/ratio, , n nth term)

 

1.) a1 + d * n  

 

2.)a1 * r^n

user input form string. there several ways convert string number in javascript:

• pass argument number()
• pass argument parseint() (for integer)
• pass argument parsefloat() (for floating-point number)

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