double getValue(int i, int j);
/**
+ * Sets the value at row i, colum j
+ *
+ * @param i
+ * @param j
+ * @param d
+ */
+ void setValue(int i, int j, double d);
+
+ /**
* Answers a copy of the values in the i'th row
*
* @return
void tred();
+ double getMaxValue();
+
+ /**
+ * Update each value in the matrix by subtracting it from the given value
+ *
+ * @param val
+ */
+ void subtractAllFrom(double val);
}