Self Studys, so referring to the Class 12 Maths For NCERT Solutions Free PDF will allow you to deepen your understanding in the given topic. But the step wise methods will allow you to know several formulas and theorems to implement properly. Students can share easily to everyone and your friend so that they can prepare for the exam very well & your friends too. You can also download full NCERT study material book PDF here for free of cost more info.