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Hello, can someone help me with solving integral (sin^2x-cos^2x)/(sin^4x+cos^4x) ? How bullet when fired perform the projectile motion? What is the concentration of hydrochloric acid if 23.3 mL of .1511M NaOH is needed to neutralize a 25.00 mL aliquot of HCL? What is the expected marks vs rank for JEE Advanced 2017? Find ∆H for reaction of C2H6 gas (∆H°f=-84.7 kJ/mol) with oxygen gas to produce gaseous carbon dioxide (∆H°f=-393.5 kJ/mol) and liquid water?