Gravity the Solution of Dark Matter

In this book, I have given the solution of dark matter which has become a mystery till date, as we all know till date dark matter has not been detected till date. So it can be that there is any mistake in our own calculations and according to the old formula, we need dark matter, that is why I have made a new formula in this book, so that if we calculate the universe. then We do not need a concept like dark matter. So in this book I have written the whole story from the old concept of dark matter to my research and finally I have derivated the formula which can solve the whole universe.