Askor stated: I thought trigonometric substitution only function if there is obtainable a sq. root for example ##sqrt x^two + two ##. No. Trig substitution is useful When you have the sum or variance of squared terms - they need not be within a sq. root. The catering company was https://gabletoppak.com/bioplastics-greenwashing-or-genuine-solution-the-truth-behind-the-hype/
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