Question

The first term a and common difference is given. Find first four term of AP.a = -1,d = -1/2

Answer 1

Answer:

$\huge{\red{\boxed{\boxed{\green{\sf{A.P=-1,\frac{-3}{2},2,\frac{-5}{2}.....}}}}}}$

Step-by-step explanation:

$\huge{\red{\boxed{\boxed{\green{\underline{\red{\sf{SOLUTION-}}}}}}}}$

□a=-1

□d=-1/2

☆To find:

○a2=?

○a3=?

○a4=?

${ \boxed{first \: method}} \\ if \: we \: know \: the \: formula \\ then \: put \: the \: value \: two \: find \: the \: terms \\ \\ a2 = a + d \\ = ) a2 = - 1 + \frac{ - 1}{2} \\ = )a2 = \frac{ - 2 - 1}{2} \\ = )a2 = \frac{ - 3}{2} \\ \\ a3 = a + 2d \\ = )a3 = - 1 + 2 \times \frac{ - 1}{2} \\ = )a3 = - 2 \\ \\ a4= a + 3d \\ = )a4 = - 1 + 3 \times \frac{ - 1}{2} \\ = )a4 = - 1 - \frac{ 3}{2} \\ = )a4 = \frac{ - 2 - 3}{2} \\ = )a4 = \frac{ - 5}{2} \\ \\ {\boxed{second \: method}} \\ if \: you \: dont \: know \: the \: formula \: then \\ add \: difference \: in \: next \: term \: you \: find \\ like \: \: a2 = - + \frac{ - 1}{2} = \frac{ - 3}{2} \\ again \\ a3 = \frac{ -3 }{2} + \frac{ - 1}{ 2} \\ = ) \frac{ - 3 - 1}{2} \\ = ) \frac{ - 4}{2} = 2$

$\huge{\red{\boxed{\boxed{\green{\sf{A.P=-1,\frac{-3}{2},2,\frac{-5}{2}.....}}}}}}$