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Mathematics

Grade10

Easy

Question

$text Find the maximum value of the function end text r left parenthesis x right parenthesis equals 2 minus square root of x plus 1 end root$

-1
0
1
2

hint Hint:

$text At end text x equals negative 1 text , the function end text r left parenthesis x right parenthesis text is maximum. end text$

The correct answer is: 2

$text At end text x equals negative 1 text , the function end text r left parenthesis x right parenthesis text is maximum. end text r left parenthesis negative 1 right parenthesis equals 2 minus square root of negative 1 plus 1 end root equals 2 minus 0 equals 2 text So, the maximum value of the function end text r left parenthesis x right parenthesis text is end text 2 text at end text left parenthesis negative 1 comma 2 right parenthesis text . end text$

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$text Find the end text x text -intercept and end text y text -intercept of the function end text p left parenthesis x right parenthesis equals 1 minus 5 x text . end text$

$text Find the end text x text -intercept and end text y text -intercept of the function end text p left parenthesis x right parenthesis equals 1 minus 5 x text . end text$

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