Class 10 Math All topics Arithmetic Progressions

Write down the common difference and the first term for the following arithmetic progressions.

a) $7,13,19,25,...$

b) $−12,−4,4,12,...$

Solution: (a) $7,13,19,25...$

$a=7−>$ first term

$d=13−7=19−13=6−>$common difference

(b) $−12,−4,4,12.....$

$a=−12,−>$ first term

$d=−12−(−4)=4−(−4)=8−>$common difference

Similar topics

introduction to trigonometry

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