diff --git a/README.md b/README.md
index 2990de4..e9dcc84 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,25 @@
 # 02_roots_and_optimization
 Repository for homework 2
+
+Question 2
+'''matlab
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,fx,ea,iter]=falsepos(cat_cable,900,910,0.00001)
+'''
+'''matlab
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,fx,ea,iter]=bisect(cat_cable,908,909,0.00001)
+'''
+'''matlab
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,ea,iter]=mod_secant(cat_cable,900,910,0.00001)
+'''
+
+
+'''matlab
+| solver | initial guess(es) | ea | number of iterations|
+| --- | --- | --- | --- |
+|falsepos   | 900, 910 |  0.00001| 4 |
+|mod_secant | 900, 910 |  0.00001| 50 |
+|bisect     | 900, 910 |  0.00001| 17 |
+'''
diff --git a/bisect_cat.m b/bisect_cat.m
new file mode 100644
index 0000000..df36339
--- /dev/null
+++ b/bisect_cat.m
@@ -0,0 +1,2 @@
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,fx,ea,iter]=bisect(cat_cable,900,910,0.00001)
\ No newline at end of file
diff --git a/falsepos.m b/falsepos.m
index 62a881c..2d010c8 100644
--- a/falsepos.m
+++ b/falsepos.m
@@ -23,7 +23,7 @@ while (1)
   xrold = xr;
   xr = (xl + xu)/2;
   % xr = (xl + xu)/2; % bisect method
-  xr=xu - (f_m(xu)*(xl-xu))/(f_m(xl)-f_m(xu)); % false position method
+  xr=xu - (func(xu)*(xl-xu))/(func(xl)-func(xu)); % false position method
   iter = iter + 1;
   if xr ~= 0,ea = abs((xr - xrold)/xr) * 100;end
   test = func(xl,varargin{:})*func(xr,varargin{:});
diff --git a/falsepos_cat.m b/falsepos_cat.m
new file mode 100644
index 0000000..20922af
--- /dev/null
+++ b/falsepos_cat.m
@@ -0,0 +1,2 @@
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,fx,ea,iter]=falsepos(cat_cable,900,910,0.00001)
diff --git a/mod_secant_cat.m b/mod_secant_cat.m
new file mode 100644
index 0000000..422f31e
--- /dev/null
+++ b/mod_secant_cat.m
@@ -0,0 +1,2 @@
+cat_cable = @(T) -35+T/10.*cosh(10./T*30)+30-T/10;
+[root,ea,iter]=mod_secant(cat_cable,900,910,0.00001)
\ No newline at end of file