Question

give all the formulas of AP......do it fast​

Answer 1

Answer:

1) to find common difference (d)

d = a2 - a1

you can confirm the value of d by--

d = a3 - a2

2)to find the term --

a2 = a1 - d

a3 = a2 - d

you can find all the terms by this formula

3) an = a + (n - 1 ) d

4) S = n÷ 2 ( 2a + ( n- 1) d)

5) S = n÷2 ( a + an) an is the last term

Answer 2

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$\bf\Huge\red{\mid{\overline{\underline{ ANSWER }}}\mid }$

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$\Large\fbox{\color{purple}{QUESTION}}$

WHAT IS FORMULA OF AP ?

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$\Large\fbox{\color{purple}{ SOLUTION }}$

★ FORMULAS OF AP ★

$\Large\mathfrak\pink{ \implies \: a_{n} = a \: + (n - 1)d }$

$\Large\mathfrak\orange{\implies \: s _{n} = \frac{n}{2}(2a + (n - 1)d) }$

$\Large\mathfrakl\red{\implies \: s _{n}=\frac{n}{2}(a + l)}$

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