Multiple Choice Questions on int 1 1 x 2 x dx ........ for Common University Entrance Test (CUET) Preparation

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    1-1 ( x - 2  + x ) dx =

    This questions was previously asked in
    CUET Mathematics Previous Year Question Paper 2022

    7

    Incorrect Answer

    5

    Incorrect Answer

    4

    Incorrect Answer

    6

    Correct Answer
    Explanation:

    Alright, let’s get straight to it.

    - The integral is ?1-1(x - 2 + x) dx.

    - Let’s tidy up inside: x - 2 + x = 2x - 2.

    - So the integral becomes ?1-1(2x - 2) dx.

    - Split it: ?1-12x dx - ?1-12 dx.

    - ?2x dx from -1 to 1 = 2 * [x²/2] from -1 to 1 = [x²] from -1 to 1. That’s 1 – 1 = 0.

    - ?2 dx from -1 to 1 = 2*[x] from -1 to 1 = 2*(1 – (-1)) = 4.

    - So the whole thing is 0 – 4 = –4.

    Now the options:

    Option:1, 7

    Option:2, 5

    Option:3, 4

    Option:4, 6

    The answer is not among the options listed. The correct value is –4.

    Just so it’s clear: None of the options match the calculated answer (–4). If you need the correct option, it’s not present among the four you gave.


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