Askor mentioned: I thought trigonometric substitution only get the job done if there is obtainable a sq. root which include ##sqrt x^2 + two ##. No. Trig substitution is helpful Should you have the sum or variation of squared conditions - they need not be within a sq. root. In https://gabletoppak.com/india-leads-in-generating-plastic-waste-with-10-2-mn-tonnes-a-year-study/
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