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Maximum and minimum value of 4sinx + 3cosx will be -(2, –1)(3, –2)(4, –3)(5, –5)

Question

Maximum and minimum value of 4sinx + 3cosx will be -(2, –1)(3, –2)(4, –3)(5, –5)

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Solution

The maximum and minimum values of the function f(x) = asin(x) + bcos(x) can be found using the formula:

sqrt(a² + b²)

Here, a = 4 and b = 3.

So, the maximum value is sqrt(4² + 3²) = sqrt(16 + 9) = sqrt(25) = 5.

The minimum value is -sqrt(a² + b²) = -5.

So, the maximum and minimum values of 4sinx + 3cosx are 5 and -5 respectively. Therefore, the correct option is (5, -5).

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