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The hyperbolic functions are defined as follows:
coshz = e[tex]^{z}[/tex] + e[tex]^{-z}[/tex] /2
sinhz = e[tex]^{z}[/tex] - e[tex]^{-z}[/tex] /2
a.)Show that coshz = cos (iz). What is the corresponding relationship for sinhz?
b.)What are the derivatives of coshz and sinhz? What about their integrals?
c.)Show that cosh^2z - sin^2 =1
d.)Show that the integral of dx/sqrt[1+x^2 = arcsin x.
Hint : substitution x = sinhz.
I'd LOVE starters on showing this, we're told to assume z is real.
I get the idea that there's an imaginery aspect to hyperbolic functions, since coshz = cos(iz) ?
coshz = e[tex]^{z}[/tex] + e[tex]^{-z}[/tex] /2
sinhz = e[tex]^{z}[/tex] - e[tex]^{-z}[/tex] /2
a.)Show that coshz = cos (iz). What is the corresponding relationship for sinhz?
b.)What are the derivatives of coshz and sinhz? What about their integrals?
c.)Show that cosh^2z - sin^2 =1
d.)Show that the integral of dx/sqrt[1+x^2 = arcsin x.
Hint : substitution x = sinhz.
I'd LOVE starters on showing this, we're told to assume z is real.
I get the idea that there's an imaginery aspect to hyperbolic functions, since coshz = cos(iz) ?