f(x) =x2-5x+7 है तो f(2) -f(2) -f (-1) + f (1/3)
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answer is here :
f(2) = x²- 5x + 7
= (2)²- 5(2) + 7
= 4 - 10 + 7
= 1
f( - 1 ) = x² - 5x + 7
= ( - 1)² - 5( - 1 ) + 7
= 1 + 5 + 7
= 13
f(1/3) = x² - 5x + 7
= (1/3)² - 5 ( 1/3) + 7
= ( 1/9 ) - 5( 1/ 3 ) +7
= ( 1/ 9 ) - (15/ 9 ) + (63/9 )
= 49
now , f (2) - f (2) - f(-1) + f (1/3)
=( 1 ) - ( 1 ) - (13) + ( 49 )
= - 13 + 49
= 36
I hope this point is clear .
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