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• Integral Step by Step
• Derivative Step by Step
• Equation systems Step by Step

• How to use it?

• Equation:
• Equation (x+9)^2=(x+6)^2
• Equation x^4+4=0
• Equation arctg(xy)
• Equation cotx
• Express {x} in terms of y where:
• -6*x+17*y=14
• 16*x+7*y=8
• 15*x-3*y=19
• -4*x-18*y=-14

• Identical expressions

• arctg(xy)
• arctgxy