initial commit / add all books

14 files changed, 154 insertions, 0 deletions

diff --git a/1322/CH19/EX19.1/160ex.sce b/1322/CH19/EX19.1/160ex.sce
new file mode 100755
index 000000000..8f1c803fb
--- /dev/null
+++ b/1322/CH19/EX19.1/160ex.sce
@@ -0,0 +1,23 @@
+
+clear ;

+clc;

+close;

+clf;

+x=linspace(0,1,7);

+y=10^x;

+plot2d(x,y,2);

+xtitle(" graph of y=10^x","x axis","y axis");

+legend("y=10^x");

+xgrid()

+

+//ex1:1.8*2.6=? ,from graph

+//1.8=10^0.26 \n 2.6=10^0.42  

+x=10^0.26;y=10^0.42;

+format(4)

+ex1_ans=x*y//from the graph

+

+//ex2:9^(1/3)

+//9=10^0.96

+x=10^0.96;

+format(4)

+ex2_ans=x^(1/3)//third law of indices

diff --git a/1322/CH19/EX19.10/169ex2.sce b/1322/CH19/EX19.10/169ex2.sce
new file mode 100755
index 000000000..2e9f58389
--- /dev/null
+++ b/1322/CH19/EX19.10/169ex2.sce
@@ -0,0 +1,10 @@
+
+//logarithm :  -1.6175-(-3.8463)

+clear; 

+clc;

+close;

+mantissa=1.6175-0.8463;

+//in borrowing to subtract 8 from 6, -1(characteristic) becomes -2 

+characteristic=-2-(-3);

+mantissa+characteristic

+

diff --git a/1322/CH19/EX19.11/169ex3.sce b/1322/CH19/EX19.11/169ex3.sce
new file mode 100755
index 000000000..7ecac880c
--- /dev/null
+++ b/1322/CH19/EX19.11/169ex3.sce
@@ -0,0 +1,10 @@
+
+//logarithm : multiply -2.8763 by 3

+clear; 

+clc;

+close;

+num=2.8763;//given

+mantissa=0.8763;

+mul=mantissa*3;

+//when mantissa is multiplied, 2 is carried forward. (-2)*3=-6. the characteristic becomes -6+2=-4

+val=-4.6289

diff --git a/1322/CH19/EX19.12/169ex4.sce b/1322/CH19/EX19.12/169ex4.sce
new file mode 100755
index 000000000..917793dcd
--- /dev/null
+++ b/1322/CH19/EX19.12/169ex4.sce
@@ -0,0 +1,13 @@
+
+//logarithm: -1.8738*1.3

+clear;

+clc;

+close;

+//multiply mantissa & characteristic seperately and add results

+x=0.8738*1.3;

+y=-1*1.3;

+//as y=-1.3 is -ve, change it to -2.7 to make mantissa +ve

+y=-2.7;

+mantissa_sum=0.13594+0.7; //of x & y

+characteristic_sum=1-2;

+characteristic_sum-mantissa_sum

diff --git a/1322/CH19/EX19.13/169ex5.sce b/1322/CH19/EX19.13/169ex5.sce
new file mode 100755
index 000000000..35027a79d
--- /dev/null
+++ b/1322/CH19/EX19.13/169ex5.sce
@@ -0,0 +1,11 @@
+
+//divide -5.3716 by 3

+clear;

+clc;

+close;

+//characteristic=-5=-6+1 or the log as -6+1.3716

+characteristic=-6/3;

+mantissa=1.3716/3;

+characteristic-mantissa

+

+

diff --git a/1322/CH19/EX19.14/170ex1.sce b/1322/CH19/EX19.14/170ex1.sce
new file mode 100755
index 000000000..65380c3a2
--- /dev/null
+++ b/1322/CH19/EX19.14/170ex1.sce
@@ -0,0 +1,7 @@
+
+//log50 to the base e 

+clear; 

+clc;

+close;

+log(50)//natural logarithm

+// or, log50_base_e=log10(50)*2.3026

diff --git a/1322/CH19/EX19.2/162ex.sce b/1322/CH19/EX19.2/162ex.sce
new file mode 100755
index 000000000..294cceaa7
--- /dev/null
+++ b/1322/CH19/EX19.2/162ex.sce
@@ -0,0 +1,8 @@
+
+clear; 

+clc;

+close;

+ans1=log10(56.2)

+ans2=log2(1024)

+ans3=log10(1000)

+ans4=log10(81)/log10(3)

diff --git a/1322/CH19/EX19.3/165ex1.sce b/1322/CH19/EX19.3/165ex1.sce
new file mode 100755
index 000000000..a081723eb
--- /dev/null
+++ b/1322/CH19/EX19.3/165ex1.sce
@@ -0,0 +1,9 @@
+
+//no. whose logarithm is 2.3714

+clear; 

+clc;

+close;

+mantissa=0.3714;

+disp("from anti-logarithm table,corresponding no. is 2352")

+// As,characteristic is 2,no. must lie between 100 & 1000.\n \n hence 3 significant figures in the intergral part

+235.2

diff --git a/1322/CH19/EX19.4/167ex1.sce b/1322/CH19/EX19.4/167ex1.sce
new file mode 100755
index 000000000..2a666a5af
--- /dev/null
+++ b/1322/CH19/EX19.4/167ex1.sce
@@ -0,0 +1,12 @@
+
+//value of (57.86*4.385)

+clear;

+clc;

+close;

+//log(p*q)=log(p)+log(q)

+p=57.86;q=4.385;

+logx=log10(p)+log10(q);

+format(6)

+x=10^logx

+

+

diff --git a/1322/CH19/EX19.5/167ex2.sce b/1322/CH19/EX19.5/167ex2.sce
new file mode 100755
index 000000000..fdd5f8d63
--- /dev/null
+++ b/1322/CH19/EX19.5/167ex2.sce
@@ -0,0 +1,10 @@
+
+//value of (5.672*18.94)/1.758

+clear; 

+clc;

+close;

+//log(p*q)=log(p)+log(q) , log(p/q)=log(p)-log(q)

+p=5.672;q=18.94;r=1.758;

+logx=log10(p)+log10(q)-log10(r);

+format(6)

+x=10^logx

diff --git a/1322/CH19/EX19.6/167ex3.sce b/1322/CH19/EX19.6/167ex3.sce
new file mode 100755
index 000000000..253d2e24d
--- /dev/null
+++ b/1322/CH19/EX19.6/167ex3.sce
@@ -0,0 +1,10 @@
+
+//5th root of 721.8

+clear; 

+clc;

+close;

+//log(a)^n=n*log(a)

+p=721.8;n=1/5;

+logx=n*log10(p);

+format(6)

+x=10^logx

diff --git a/1322/CH19/EX19.7/168ex1.sce b/1322/CH19/EX19.7/168ex1.sce
new file mode 100755
index 000000000..9b26d8ddc
--- /dev/null
+++ b/1322/CH19/EX19.7/168ex1.sce
@@ -0,0 +1,9 @@
+
+//logs of 0.3185,0.03185,0.003185

+clear; 

+clc;

+close;

+x=0.3185;y=0.03185;z=0.003185;

+logx=log10(0.3185)

+logy=log10(0.03185)

+logz=log10(0.003185)

diff --git a/1322/CH19/EX19.8/168ex2.sce b/1322/CH19/EX19.8/168ex2.sce
new file mode 100755
index 000000000..3c31d1489
--- /dev/null
+++ b/1322/CH19/EX19.8/168ex2.sce
@@ -0,0 +1,9 @@
+
+//no. with logarithm -3.5416

+clear; 

+clc;

+close;

+mantissa=0.5416;

+disp("from anti-logarithm table, corresponding no.is 3840 ")

+//characteristic is -3.\n \n hence there will be 2 zeros after the decimal point

+val=0.003480

diff --git a/1322/CH19/EX19.9/169ex1.sce b/1322/CH19/EX19.9/169ex1.sce
new file mode 100755
index 000000000..02db224da
--- /dev/null
+++ b/1322/CH19/EX19.9/169ex1.sce
@@ -0,0 +1,13 @@
+
+//sum of logarithms -1.6173,-2.3415,-1.6493,-0.7374

+clear; 

+clc;

+close;

+x=.6173;y=.3415;z=.6493;a=0.7374;//mantissa's of all 4 logarithms

+mantissa=x+y+z+a;

+//2 which is carried forward from the addition of mantissa is +ve.

+characteristic=-1-2-1-0+2;//characteristic part of all 4 logarithms

+mprintf("sum=-%f",mantissa)

+

+

+