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Question Number 208591 by RoseAli last updated on 18/Jun/24

Answered by A5T last updated on 18/Jun/24

0≤3∣sinx∣≤3; −4≤−4∣cosx∣≤0 ⇒−4≤3∣sinx∣−4∣cosx∣≤3 ⇒y∈[−4,3]

0⩽3∣sinx∣⩽3;−4⩽−4∣cosx∣⩽0⇒−4⩽3∣sinx∣−4∣cosx∣⩽3⇒y∈[−4,3]

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