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• Integral Step by Step
• Derivative Step by Step
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• How to use it?

• Equation:
• Equation sqrt(x^2-x-1)-sqrt(x)=1
• Equation (x+2)^2+(x-3)^2=2x^2
• Equation x^2-7x=0
• Equation arctg(xy)
• Express {x} in terms of y where:
• 20*x-4*y=-7
• 17*x-18*y=10
• 9*x-4*y=2
• -5*x+6*y=19

• Identical expressions

• arctg(xy)
• arctgxy